Loogle!

Result

Found 290 declarations mentioning DivisionSemiring. Of these, only the first 200 are shown.

DivisionSemiring 📋 Mathlib.Algebra.Field.Defs
(K : Type u_2) : Type u_2
DivisionRing.toDivisionSemiring 📋 Mathlib.Algebra.Field.Defs
{K : Type u_1} [DivisionRing K] : DivisionSemiring K
DivisionSemiring.toDiv 📋 Mathlib.Algebra.Field.Defs
{K : Type u_2} [self : DivisionSemiring K] : Div K
DivisionSemiring.toGroupWithZero 📋 Mathlib.Algebra.Field.Defs
{K : Type u_2} [self : DivisionSemiring K] : GroupWithZero K
DivisionSemiring.toInv 📋 Mathlib.Algebra.Field.Defs
{K : Type u_2} [self : DivisionSemiring K] : Inv K
DivisionSemiring.toNNRatCast 📋 Mathlib.Algebra.Field.Defs
{K : Type u_2} [self : DivisionSemiring K] : NNRatCast K
DivisionSemiring.toNontrivial 📋 Mathlib.Algebra.Field.Defs
{K : Type u_2} [self : DivisionSemiring K] : Nontrivial K
DivisionSemiring.toSemiring 📋 Mathlib.Algebra.Field.Defs
{K : Type u_2} [self : DivisionSemiring K] : Semiring K
DivisionSemiring.toZPow 📋 Mathlib.Algebra.Field.Defs
{K : Type u_2} [self : DivisionSemiring K] : ZPow K
Semifield.toDivisionSemiring 📋 Mathlib.Algebra.Field.Defs
{K : Type u_2} [self : Semifield K] : DivisionSemiring K
DivisionSemiring.nnqsmul 📋 Mathlib.Algebra.Field.Defs
{K : Type u_2} [self : DivisionSemiring K] : ℚ≥0 → K → K
NNRat.smulDivisionSemiring 📋 Mathlib.Algebra.Field.Defs
{K : Type u_1} [DivisionSemiring K] : SMul ℚ≥0 K
DivisionSemiring.nnqsmul_def 📋 Mathlib.Algebra.Field.Defs
{K : Type u_2} [self : DivisionSemiring K] (q : ℚ≥0) (a : K) : DivisionSemiring.nnqsmul q a = ↑q * a
DivisionSemiring.zpow_zero' 📋 Mathlib.Algebra.Field.Defs
{K : Type u_2} [self : DivisionSemiring K] (a : K) : a ^ 0 = 1
DivisionSemiring.div_eq_mul_inv 📋 Mathlib.Algebra.Field.Defs
{K : Type u_2} [self : DivisionSemiring K] (a b : K) : a / b = a * b⁻¹
DivisionSemiring.inv_zero 📋 Mathlib.Algebra.Field.Defs
{K : Type u_2} [self : DivisionSemiring K] : 0⁻¹ = 0
DivisionSemiring.nnratCast_def 📋 Mathlib.Algebra.Field.Defs
{K : Type u_2} [self : DivisionSemiring K] (q : ℚ≥0) : ↑q = ↑q.num / ↑q.den
NNRat.smul_def 📋 Mathlib.Algebra.Field.Defs
{K : Type u_1} [DivisionSemiring K] (q : ℚ≥0) (a : K) : q • a = ↑q * a
NNRat.smul_one_eq_cast 📋 Mathlib.Algebra.Field.Defs
(K : Type u_1) [DivisionSemiring K] (q : ℚ≥0) : q • 1 = ↑q
DivisionSemiring.zpow_neg' 📋 Mathlib.Algebra.Field.Defs
{K : Type u_2} [self : DivisionSemiring K] (n : ℕ) (a : K) : a ^ Int.negSucc n = (a ^ ↑n.succ)⁻¹
DivisionSemiring.mul_inv_cancel 📋 Mathlib.Algebra.Field.Defs
{K : Type u_2} [self : DivisionSemiring K] (a : K) : a ≠ 0 → a * a⁻¹ = 1
NNRat.cast_def 📋 Mathlib.Algebra.Field.Defs
{K : Type u_1} [DivisionSemiring K] (q : ℚ≥0) : ↑q = ↑q.num / ↑q.den
DivisionSemiring.zpow_succ' 📋 Mathlib.Algebra.Field.Defs
{K : Type u_2} [self : DivisionSemiring K] (n : ℕ) (a : K) : a ^ ↑n.succ = a ^ ↑n * a
DivisionSemiring.mk 📋 Mathlib.Algebra.Field.Defs
{K : Type u_2} [toSemiring : Semiring K] [toInv : Inv K] [toDiv : Div K] [toZPow : ZPow K] (div_eq_mul_inv : ∀ (a b : K), a / b = a * b⁻¹ := by intros; rfl) (zpow_zero' : ∀ (a : K), a ^ 0 = 1 := by intros; rfl) (zpow_succ' : ∀ (n : ℕ) (a : K), a ^ ↑n.succ = a ^ ↑n * a := by intros; rfl) (zpow_neg' : ∀ (n : ℕ) (a : K), a ^ Int.negSucc n = (a ^ ↑n.succ)⁻¹ := by intros; rfl) [toNontrivial : Nontrivial K] (inv_zero : 0⁻¹ = 0) (mul_inv_cancel : ∀ (a : K), a ≠ 0 → a * a⁻¹ = 1) [toNNRatCast : NNRatCast K] (nnratCast_def : ∀ (q : ℚ≥0), ↑q = ↑q.num / ↑q.den := by intros; rfl) (nnqsmul : ℚ≥0 → K → K) (nnqsmul_def : ∀ (q : ℚ≥0) (a : K), nnqsmul q a = ↑q * a := by intros; rfl) : DivisionSemiring K
Lex.instDivisionSemiring 📋 Mathlib.Algebra.Field.Basic
{K : Type u_1} [DivisionSemiring K] : DivisionSemiring (Lex K)
OrderDual.instDivisionSemiring 📋 Mathlib.Algebra.Field.Basic
{K : Type u_1} [DivisionSemiring K] : DivisionSemiring Kᵒᵈ
add_div 📋 Mathlib.Algebra.Field.Basic
{K : Type u_1} [DivisionSemiring K] (a b c : K) : (a + b) / c = a / c + b / c
add_div' 📋 Mathlib.Algebra.Field.Basic
{K : Type u_1} [DivisionSemiring K] (a b c : K) (hc : c ≠ 0) : b + a / c = (b * c + a) / c
add_div_eq_mul_add_div 📋 Mathlib.Algebra.Field.Basic
{K : Type u_1} [DivisionSemiring K] {c : K} (a b : K) (hc : c ≠ 0) : a + b / c = (a * c + b) / c
div_add' 📋 Mathlib.Algebra.Field.Basic
{K : Type u_1} [DivisionSemiring K] (a b c : K) (hc : c ≠ 0) : a / c + b = (a + b * c) / c
div_add_one 📋 Mathlib.Algebra.Field.Basic
{K : Type u_1} [DivisionSemiring K] {a b : K} (h : b ≠ 0) : a / b + 1 = (a + b) / b
div_add_same 📋 Mathlib.Algebra.Field.Basic
{K : Type u_1} [DivisionSemiring K] {a b : K} (h : b ≠ 0) : (a + b) / b = a / b + 1
one_add_div 📋 Mathlib.Algebra.Field.Basic
{K : Type u_1} [DivisionSemiring K] {a b : K} (h : b ≠ 0) : 1 + a / b = (b + a) / b
same_add_div 📋 Mathlib.Algebra.Field.Basic
{K : Type u_1} [DivisionSemiring K] {a b : K} (h : b ≠ 0) : (b + a) / b = 1 + a / b
add_self_div_two 📋 Mathlib.Algebra.Field.Basic
{K : Type u_1} [DivisionSemiring K] [NeZero 2] (a : K) : (a + a) / 2 = a
Commute.inv_add_inv 📋 Mathlib.Algebra.Field.Basic
{K : Type u_1} [DivisionSemiring K] {a b : K} (hab : Commute a b) (ha : a ≠ 0) (hb : b ≠ 0) : a⁻¹ + b⁻¹ = (a + b) / (a * b)
add_halves 📋 Mathlib.Algebra.Field.Basic
{K : Type u_1} [DivisionSemiring K] [NeZero 2] (a : K) : a / 2 + a / 2 = a
inv_add_inv' 📋 Mathlib.Algebra.Field.Basic
{K : Type u_1} [DivisionSemiring K] {a b : K} (ha : a ≠ 0) (hb : b ≠ 0) : a⁻¹ + b⁻¹ = a⁻¹ * (a + b) * b⁻¹
Commute.one_div_add_one_div 📋 Mathlib.Algebra.Field.Basic
{K : Type u_1} [DivisionSemiring K] {a b : K} (hab : Commute a b) (ha : a ≠ 0) (hb : b ≠ 0) : 1 / a + 1 / b = (a + b) / (a * b)
Commute.div_add_div 📋 Mathlib.Algebra.Field.Basic
{K : Type u_1} [DivisionSemiring K] {a b c d : K} (hbc : Commute b c) (hbd : Commute b d) (hb : b ≠ 0) (hd : d ≠ 0) : a / b + c / d = (a * d + b * c) / (b * d)
one_div_mul_add_mul_one_div_eq_one_div_add_one_div 📋 Mathlib.Algebra.Field.Basic
{K : Type u_1} [DivisionSemiring K] {a b : K} (ha : a ≠ 0) (hb : b ≠ 0) : 1 / a * (a + b) * (1 / b) = 1 / a + 1 / b
Function.Injective.divisionSemiring 📋 Mathlib.Algebra.Field.Basic
{K : Type u_1} {L : Type u_2} [Zero K] [Add K] [One K] [Mul K] [Inv K] [Div K] [SMul ℕ K] [SMul ℚ≥0 K] [Pow K ℕ] [Pow K ℤ] [NatCast K] [NNRatCast K] (f : K → L) (hf : Function.Injective f) [DivisionSemiring L] (zero : f 0 = 0) (one : f 1 = 1) (add : ∀ (x y : K), f (x + y) = f x + f y) (mul : ∀ (x y : K), f (x * y) = f x * f y) (inv : ∀ (x : K), f x⁻¹ = (f x)⁻¹) (div : ∀ (x y : K), f (x / y) = f x / f y) (nsmul : ∀ (n : ℕ) (x : K), f (n • x) = n • f x) (nnqsmul : ∀ (q : ℚ≥0) (x : K), f (q • x) = q • f x) (npow : ∀ (x : K) (n : ℕ), f (x ^ n) = f x ^ n) (zpow : ∀ (x : K) (n : ℤ), f (x ^ n) = f x ^ n) (natCast : ∀ (n : ℕ), f ↑n = ↑n) (nnratCast : ∀ (q : ℚ≥0), f ↑q = ↑q) : DivisionSemiring K
NNRat.rawCast 📋 Mathlib.Tactic.NormNum.Result
{α : Type u} [DivisionSemiring α] (n d : ℕ) : α
Mathlib.Meta.NormNum.IsNNRat.to_raw_eq 📋 Mathlib.Tactic.NormNum.Result
{α : Type u} {n d : ℕ} [DivisionSemiring α] {a : α} : Mathlib.Meta.NormNum.IsNNRat a n d → a = NNRat.rawCast n d
Mathlib.Meta.NormNum.IsNNRat.den_nz 📋 Mathlib.Tactic.NormNum.Result
{α : Type u_1} [DivisionSemiring α] {a : α} {n d : ℕ} : Mathlib.Meta.NormNum.IsNNRat a n d → ↑d ≠ 0
Mathlib.Meta.NormNum.IsNNRat.of_raw 📋 Mathlib.Tactic.NormNum.Result
(α : Type u_1) [DivisionSemiring α] (n d : ℕ) (h : ↑d ≠ 0) : Mathlib.Meta.NormNum.IsNNRat (NNRat.rawCast n d) n d
Mathlib.Meta.NormNum.IsNNRat.to_eq 📋 Mathlib.Tactic.NormNum.Result
{α : Type u_1} [DivisionSemiring α] {n d : ℕ} {a n' d' : α} : Mathlib.Meta.NormNum.IsNNRat a n d → ↑n = n' → ↑d = d' → a = n' / d'
Mathlib.Meta.NormNum.isNNRat_div 📋 Mathlib.Tactic.NormNum.Basic
{α : Type u} [DivisionSemiring α] {a b : α} {cn cd : ℕ} : Mathlib.Meta.NormNum.IsNNRat (a * b⁻¹) cn cd → Mathlib.Meta.NormNum.IsNNRat (a / b) cn cd
NNRat.cast_commute 📋 Mathlib.Data.Rat.Cast.Defs
{α : Type u_2} [DivisionSemiring α] (q : ℚ≥0) (a : α) : Commute (↑q) a
NNRat.commute_cast 📋 Mathlib.Data.Rat.Cast.Defs
{α : Type u_2} [DivisionSemiring α] (a : α) (q : ℚ≥0) : Commute a ↑q
NNRat.cast_zero 📋 Mathlib.Data.Rat.Cast.Defs
{α : Type u_2} [DivisionSemiring α] : ↑0 = 0
NNRat.cast_natCast 📋 Mathlib.Data.Rat.Cast.Defs
{α : Type u_2} [DivisionSemiring α] (n : ℕ) : ↑↑n = ↑n
eq_nnratCast 📋 Mathlib.Data.Rat.Cast.Defs
{F : Type u_1} {α : Type u_2} [DivisionSemiring α] [FunLike F ℚ≥0 α] [RingHomClass F ℚ≥0 α] (f : F) (q : ℚ≥0) : f q = ↑q
NNRat.cast_one 📋 Mathlib.Data.Rat.Cast.Defs
{α : Type u_2} [DivisionSemiring α] : ↑1 = 1
NNRat.cast_comm 📋 Mathlib.Data.Rat.Cast.Defs
{α : Type u_2} [DivisionSemiring α] (q : ℚ≥0) (a : α) : ↑q * a = a * ↑q
map_nnratCast 📋 Mathlib.Data.Rat.Cast.Defs
{F : Type u_1} {α : Type u_2} {β : Type u_3} [FunLike F α β] [DivisionSemiring α] [DivisionSemiring β] [RingHomClass F α β] (f : F) (q : ℚ≥0) : f ↑q = ↑q
NNRat.cast_ofNat 📋 Mathlib.Data.Rat.Cast.Defs
{α : Type u_2} [DivisionSemiring α] (n : ℕ) [n.AtLeastTwo] : ↑(OfNat.ofNat n) = OfNat.ofNat n
NNRat.cast_inv_of_ne_zero 📋 Mathlib.Data.Rat.Cast.Defs
{α : Type u_2} [DivisionSemiring α] {q : ℚ≥0} (hq : ↑q.num ≠ 0) : ↑q⁻¹ = (↑q)⁻¹
NNRat.cast_divNat_of_ne_zero 📋 Mathlib.Data.Rat.Cast.Defs
{α : Type u_2} [DivisionSemiring α] (a : ℕ) {b : ℕ} (hb : ↑b ≠ 0) : ↑(NNRat.divNat a b) = ↑a / ↑b
NNRat.cast_div_of_ne_zero 📋 Mathlib.Data.Rat.Cast.Defs
{α : Type u_2} [DivisionSemiring α] {q r : ℚ≥0} (hq : ↑q.den ≠ 0) (hr : ↑r.num ≠ 0) : ↑(q / r) = ↑q / ↑r
NNRat.cast_add_of_ne_zero 📋 Mathlib.Data.Rat.Cast.Defs
{α : Type u_2} [DivisionSemiring α] {q r : ℚ≥0} (hq : ↑q.den ≠ 0) (hr : ↑r.den ≠ 0) : ↑(q + r) = ↑q + ↑r
NNRat.cast_mul_of_ne_zero 📋 Mathlib.Data.Rat.Cast.Defs
{α : Type u_2} [DivisionSemiring α] {q r : ℚ≥0} (hq : ↑q.den ≠ 0) (hr : ↑r.den ≠ 0) : ↑(q * r) = ↑q * ↑r
NNRat.cast_injective 📋 Mathlib.Data.Rat.Cast.CharZero
{α : Type u_1} [DivisionSemiring α] [CharZero α] : Function.Injective NNRat.cast
NNRat.castHom 📋 Mathlib.Data.Rat.Cast.CharZero
(α : Type u_1) [DivisionSemiring α] [CharZero α] : ℚ≥0 →+* α
NNRat.cast_inj 📋 Mathlib.Data.Rat.Cast.CharZero
{α : Type u_1} [DivisionSemiring α] [CharZero α] {p q : ℚ≥0} : ↑p = ↑q ↔ p = q
NNRat.cast_inv 📋 Mathlib.Data.Rat.Cast.CharZero
{α : Type u_1} [DivisionSemiring α] [CharZero α] (p : ℚ≥0) : ↑p⁻¹ = (↑p)⁻¹
NNRat.cast_eq_zero 📋 Mathlib.Data.Rat.Cast.CharZero
{α : Type u_1} [DivisionSemiring α] [CharZero α] {q : ℚ≥0} : ↑q = 0 ↔ q = 0
NNRat.cast_ne_zero 📋 Mathlib.Data.Rat.Cast.CharZero
{α : Type u_1} [DivisionSemiring α] [CharZero α] {q : ℚ≥0} : ↑q ≠ 0 ↔ q ≠ 0
NNRat.cast_zpow 📋 Mathlib.Data.Rat.Cast.CharZero
{α : Type u_1} [DivisionSemiring α] [CharZero α] (q : ℚ≥0) (p : ℤ) : ↑(q ^ p) = ↑q ^ p
NNRat.cast_div 📋 Mathlib.Data.Rat.Cast.CharZero
{α : Type u_1} [DivisionSemiring α] [CharZero α] (p q : ℚ≥0) : ↑(p / q) = ↑p / ↑q
NNRat.coe_castHom 📋 Mathlib.Data.Rat.Cast.CharZero
{α : Type u_1} [DivisionSemiring α] [CharZero α] : ⇑(NNRat.castHom α) = NNRat.cast
NNRat.cast_add 📋 Mathlib.Data.Rat.Cast.CharZero
{α : Type u_1} [DivisionSemiring α] [CharZero α] (p q : ℚ≥0) : ↑(p + q) = ↑p + ↑q
NNRat.cast_mul 📋 Mathlib.Data.Rat.Cast.CharZero
{α : Type u_1} [DivisionSemiring α] [CharZero α] (p q : ℚ≥0) : ↑(p * q) = ↑p * ↑q
NNRat.cast_divNat 📋 Mathlib.Data.Rat.Cast.CharZero
{α : Type u_1} [DivisionSemiring α] [CharZero α] (a b : ℕ) : ↑(NNRat.divNat a b) = ↑a / ↑b
Mathlib.Meta.NormNum.isNat_nnratCast 📋 Mathlib.Tactic.NormNum.Inv
{R : Type u_1} [DivisionSemiring R] {q : ℚ≥0} {n : ℕ} : Mathlib.Meta.NormNum.IsNat q n → Mathlib.Meta.NormNum.IsNat (↑q) n
Mathlib.Meta.NormNum.isNNRat_nnratCast 📋 Mathlib.Tactic.NormNum.Inv
{R : Type u_1} [DivisionSemiring R] [CharZero R] {q : ℚ≥0} {n d : ℕ} : Mathlib.Meta.NormNum.IsNNRat q n d → Mathlib.Meta.NormNum.IsNNRat (↑q) n d
Mathlib.Meta.NormNum.isNat_inv_one 📋 Mathlib.Tactic.NormNum.Inv
{α : Type u_1} [DivisionSemiring α] {a : α} : Mathlib.Meta.NormNum.IsNat a 1 → Mathlib.Meta.NormNum.IsNat a⁻¹ 1
Mathlib.Meta.NormNum.isNat_inv_zero 📋 Mathlib.Tactic.NormNum.Inv
{α : Type u_1} [DivisionSemiring α] {a : α} : Mathlib.Meta.NormNum.IsNat a 0 → Mathlib.Meta.NormNum.IsNat a⁻¹ 0
Mathlib.Meta.NormNum.isNNRat_inv_pos 📋 Mathlib.Tactic.NormNum.Inv
{α : Type u_1} [DivisionSemiring α] [CharZero α] {a : α} {n d : ℕ} : Mathlib.Meta.NormNum.IsNNRat a n.succ d → Mathlib.Meta.NormNum.IsNNRat a⁻¹ d n.succ
Mathlib.Meta.NormNum.isNNRat_zpow_pos 📋 Mathlib.Tactic.NormNum.Pow
{α : Type u_1} [DivisionSemiring α] {a : α} {b : ℤ} {nb num den : ℕ} (pb : Mathlib.Meta.NormNum.IsNat b nb) (pe' : Mathlib.Meta.NormNum.IsNNRat (a ^ nb) num den) : Mathlib.Meta.NormNum.IsNNRat (a ^ b) num den
Mathlib.Meta.NormNum.isNat_zpow_pos 📋 Mathlib.Tactic.NormNum.Pow
{α : Type u_1} [DivisionSemiring α] {a : α} {b : ℤ} {nb ne : ℕ} (pb : Mathlib.Meta.NormNum.IsNat b nb) (pe' : Mathlib.Meta.NormNum.IsNat (a ^ nb) ne) : Mathlib.Meta.NormNum.IsNat (a ^ b) ne
Mathlib.Meta.NormNum.isNNRat_zpow_neg 📋 Mathlib.Tactic.NormNum.Pow
{α : Type u_1} [DivisionSemiring α] {a : α} {b : ℤ} {nb num den : ℕ} (pb : Mathlib.Meta.NormNum.IsInt b (Int.negOfNat nb)) (pe' : Mathlib.Meta.NormNum.IsNNRat (a ^ nb)⁻¹ num den) : Mathlib.Meta.NormNum.IsNNRat (a ^ b) num den
Mathlib.Meta.NormNum.isNat_zpow_neg 📋 Mathlib.Tactic.NormNum.Pow
{α : Type u_1} [DivisionSemiring α] {a : α} {b : ℤ} {nb ne : ℕ} (pb : Mathlib.Meta.NormNum.IsInt b (Int.negOfNat nb)) (pe' : Mathlib.Meta.NormNum.IsNat (a ^ nb)⁻¹ ne) : Mathlib.Meta.NormNum.IsNat (a ^ b) ne
Mathlib.Tactic.Ring.cast_nnrat 📋 Mathlib.Tactic.Ring.Basic
{n d : ℕ} {R : Type u_2} [DivisionSemiring R] {a : R} : Mathlib.Meta.NormNum.IsNNRat a n d → a = NNRat.rawCast n d + 0
Nonneg.div 📋 Mathlib.Algebra.Order.Nonneg.Field
{α : Type u_1} [DivisionSemiring α] [LinearOrder α] [IsStrictOrderedRing α] : Div (Nonneg α)
Nonneg.divisionSemiring 📋 Mathlib.Algebra.Order.Nonneg.Field
{α : Type u_1} [DivisionSemiring α] [LinearOrder α] [IsStrictOrderedRing α] : DivisionSemiring (Nonneg α)
Nonneg.instNNRatCast 📋 Mathlib.Algebra.Order.Nonneg.Field
{α : Type u_1} [DivisionSemiring α] [LinearOrder α] [IsStrictOrderedRing α] : NNRatCast (Nonneg α)
Nonneg.inv 📋 Mathlib.Algebra.Order.Nonneg.Field
{α : Type u_1} [DivisionSemiring α] [LinearOrder α] [IsStrictOrderedRing α] : Inv (Nonneg α)
Nonneg.instNNRatSMul 📋 Mathlib.Algebra.Order.Nonneg.Field
{α : Type u_1} [DivisionSemiring α] [LinearOrder α] [IsStrictOrderedRing α] : SMul ℚ≥0 (Nonneg α)
Nonneg.zpow 📋 Mathlib.Algebra.Order.Nonneg.Field
{α : Type u_1} [DivisionSemiring α] [LinearOrder α] [IsStrictOrderedRing α] : Pow (Nonneg α) ℤ
NNRat.cast_nonneg 📋 Mathlib.Algebra.Order.Nonneg.Field
{α : Type u_1} [DivisionSemiring α] [LinearOrder α] [IsStrictOrderedRing α] (q : ℚ≥0) : 0 ≤ ↑q
nnqsmul_nonneg 📋 Mathlib.Algebra.Order.Nonneg.Field
{α : Type u_1} [DivisionSemiring α] [LinearOrder α] [IsStrictOrderedRing α] {a : α} (q : ℚ≥0) (ha : 0 ≤ a) : 0 ≤ q • a
Nonneg.coe_nnratCast 📋 Mathlib.Algebra.Order.Nonneg.Field
{α : Type u_1} [DivisionSemiring α] [LinearOrder α] [IsStrictOrderedRing α] (q : ℚ≥0) : ↑↑q = ↑q
Nonneg.mk_nnratCast 📋 Mathlib.Algebra.Order.Nonneg.Field
{α : Type u_1} [DivisionSemiring α] [LinearOrder α] [IsStrictOrderedRing α] (q : ℚ≥0) : ⟨↑q, ⋯⟩ = ↑q
Nonneg.mk_nnqsmul 📋 Mathlib.Algebra.Order.Nonneg.Field
{α : Type u_1} [DivisionSemiring α] [LinearOrder α] [IsStrictOrderedRing α] (q : ℚ≥0) (a : α) (ha : 0 ≤ a) : ↑⟨q • a, ⋯⟩ = q • a
Nonneg.coe_inv 📋 Mathlib.Algebra.Order.Nonneg.Field
{α : Type u_1} [DivisionSemiring α] [LinearOrder α] [IsStrictOrderedRing α] (a : Nonneg α) : ↑a⁻¹ = (↑a)⁻¹
Nonneg.coe_nnqsmul 📋 Mathlib.Algebra.Order.Nonneg.Field
{α : Type u_1} [DivisionSemiring α] [LinearOrder α] [IsStrictOrderedRing α] (q : ℚ≥0) (a : Nonneg α) : ↑(q • a) = q • ↑a
Nonneg.coe_zpow 📋 Mathlib.Algebra.Order.Nonneg.Field
{α : Type u_1} [DivisionSemiring α] [LinearOrder α] [IsStrictOrderedRing α] (a : Nonneg α) (n : ℤ) : ↑(a ^ n) = ↑a ^ n
Nonneg.unitsEquivPos 📋 Mathlib.Algebra.Order.Nonneg.Field
(R : Type u_2) [DivisionSemiring R] [PartialOrder R] [IsStrictOrderedRing R] [PosMulReflectLT R] : (Nonneg R)ˣ ≃* { r // 0 < r }
Nonneg.coe_div 📋 Mathlib.Algebra.Order.Nonneg.Field
{α : Type u_1} [DivisionSemiring α] [LinearOrder α] [IsStrictOrderedRing α] (a b : Nonneg α) : ↑(a / b) = ↑a / ↑b
Nonneg.inv_mk 📋 Mathlib.Algebra.Order.Nonneg.Field
{α : Type u_1} [DivisionSemiring α] [LinearOrder α] [IsStrictOrderedRing α] {x : α} (hx : 0 ≤ x) : ⟨x, hx⟩⁻¹ = ⟨x⁻¹, ⋯⟩
Nonneg.mk_zpow 📋 Mathlib.Algebra.Order.Nonneg.Field
{α : Type u_1} [DivisionSemiring α] [LinearOrder α] [IsStrictOrderedRing α] {x : α} (hx : 0 ≤ x) (n : ℤ) : ⟨x, hx⟩ ^ n = ⟨x ^ n, ⋯⟩
Nonneg.mk_div_mk 📋 Mathlib.Algebra.Order.Nonneg.Field
{α : Type u_1} [DivisionSemiring α] [LinearOrder α] [IsStrictOrderedRing α] {x y : α} (hx : 0 ≤ x) (hy : 0 ≤ y) : ⟨x, hx⟩ / ⟨y, hy⟩ = ⟨x / y, ⋯⟩
Nonneg.unitsEquivPos_apply_coe 📋 Mathlib.Algebra.Order.Nonneg.Field
(R : Type u_2) [DivisionSemiring R] [PartialOrder R] [IsStrictOrderedRing R] [PosMulReflectLT R] (r : (Nonneg R)ˣ) : ↑((Nonneg.unitsEquivPos R) r) = ↑↑r
Nonneg.val_unitsEquivPos_symm_apply_coe 📋 Mathlib.Algebra.Order.Nonneg.Field
(R : Type u_2) [DivisionSemiring R] [PartialOrder R] [IsStrictOrderedRing R] [PosMulReflectLT R] (r : { r // 0 < r }) : ↑↑((Nonneg.unitsEquivPos R).symm r) = ↑r
Nonneg.val_inv_unitsEquivPos_symm_apply_coe 📋 Mathlib.Algebra.Order.Nonneg.Field
(R : Type u_2) [DivisionSemiring R] [PartialOrder R] [IsStrictOrderedRing R] [PosMulReflectLT R] (r : { r // 0 < r }) : ↑↑((Nonneg.unitsEquivPos R).symm r)⁻¹ = (↑r)⁻¹
Mathlib.Meta.NormNum.isNNRat_ofScientific_of_true 📋 Mathlib.Tactic.NormNum.OfScientific
{α : Type u_1} [DivisionSemiring α] {m e n d : ℕ} : Mathlib.Meta.NormNum.IsNNRat (↑(NNRat.divNat m (10 ^ e))) n d → Mathlib.Meta.NormNum.IsNNRat (OfScientific.ofScientific m true e) n d
Mathlib.Meta.NormNum.isNat_ofScientific_of_false 📋 Mathlib.Tactic.NormNum.OfScientific
{α : Type u_1} [DivisionSemiring α] {m e nm ne n : ℕ} : Mathlib.Meta.NormNum.IsNat m nm → Mathlib.Meta.NormNum.IsNat e ne → n = nm.mul (10 ^ ne) → Mathlib.Meta.NormNum.IsNat (OfScientific.ofScientific m false e) n
Mathlib.Tactic.RingNF.nnrat_rawCast 📋 Mathlib.Tactic.Ring.RingNF
{n d : ℕ} {R : Type u_2} [DivisionSemiring R] : NNRat.rawCast n d = n.rawCast / d.rawCast
NNRat.cast_pow 📋 Mathlib.Data.Rat.Cast.Lemmas
{K : Type u_1} [DivisionSemiring K] (q : ℚ≥0) (n : ℕ) : ↑(q ^ n) = ↑q ^ n
NNRat.cast_zpow_of_ne_zero 📋 Mathlib.Data.Rat.Cast.Lemmas
{K : Type u_1} [DivisionSemiring K] (q : ℚ≥0) (z : ℤ) (hq : ↑q.num ≠ 0) : ↑(q ^ z) = ↑q ^ z
Submodule.smul_mem_iff 📋 Mathlib.Algebra.Module.Submodule.Basic
{S : Type u'} {R : Type u} {M : Type v} [DivisionSemiring S] [Semiring R] [AddCommMonoid M] [Module R M] [SMul S R] [Module S M] [IsScalarTower S R M] (p : Submodule R M) {s : S} {x : M} (s0 : s ≠ 0) : s • x ∈ p ↔ x ∈ p
DivisionSemiring.to_moduleIsTorsionFree 📋 Mathlib.Algebra.Module.Torsion.Field
{𝕜 : Type u_1} {M : Type u_2} [DivisionSemiring 𝕜] [AddCommMonoid M] [Module 𝕜 M] : Module.IsTorsionFree 𝕜 M
inv_natCast_smul_eq 📋 Mathlib.Algebra.Module.Basic
{E : Type u_5} (R : Type u_6) (S : Type u_7) [AddCommMonoid E] [DivisionSemiring R] [DivisionSemiring S] [Module R E] [Module S E] (n : ℕ) (x : E) : (↑n)⁻¹ • x = (↑n)⁻¹ • x
map_inv_natCast_smul 📋 Mathlib.Algebra.Module.Basic
{M : Type u_3} {M₂ : Type u_4} [AddCommMonoid M] [AddCommMonoid M₂] {F : Type u_5} [FunLike F M M₂] [AddMonoidHomClass F M M₂] (f : F) (R : Type u_6) (S : Type u_7) [DivisionSemiring R] [DivisionSemiring S] [Module R M] [Module S M₂] (n : ℕ) (x : M) : f ((↑n)⁻¹ • x) = (↑n)⁻¹ • f x
inv_natCast_smul_comm 📋 Mathlib.Algebra.Module.Basic
{α : Type u_5} {E : Type u_6} (R : Type u_7) [AddCommMonoid E] [DivisionSemiring R] [Module R E] [DistribSMul α E] (n : ℕ) (s : α) (x : E) : (↑n)⁻¹ • s • x = s • (↑n)⁻¹ • x
IsAbsoluteValue.abv_inv 📋 Mathlib.Algebra.Order.AbsoluteValue.Basic
{S : Type u_4} [Semifield S] [LinearOrder S] {R : Type u_5} [DivisionSemiring R] (abv : R → S) [IsAbsoluteValue abv] (a : R) : abv a⁻¹ = (abv a)⁻¹
IsAbsoluteValue.abv_div 📋 Mathlib.Algebra.Order.AbsoluteValue.Basic
{S : Type u_4} [Semifield S] [LinearOrder S] {R : Type u_5} [DivisionSemiring R] (abv : R → S) [IsAbsoluteValue abv] (a b : R) : abv (a / b) = abv a / abv b
Ideal.eq_bot_or_top 📋 Mathlib.RingTheory.Ideal.Lattice
{K : Type u} [DivisionSemiring K] (I : Ideal K) : I = ⊥ ∨ I = ⊤
Ideal.eq_bot_of_prime 📋 Mathlib.RingTheory.Ideal.Prime
{K : Type u} [DivisionSemiring K] (I : Ideal K) [h : I.IsPrime] : I = ⊥
Ideal.bot_isMaximal 📋 Mathlib.RingTheory.Ideal.Maximal
{K : Type u} [DivisionSemiring K] : ⊥.IsMaximal
Ideal.instFinite 📋 Mathlib.RingTheory.Ideal.Basic
{K : Type u_4} [DivisionSemiring K] : Finite (Ideal K)
Ideal.equivFinTwo 📋 Mathlib.RingTheory.Ideal.Basic
(K : Type u_4) [DivisionSemiring K] : Ideal K ≃ Fin 2
Ideal.isSimpleOrder 📋 Mathlib.RingTheory.Ideal.Basic
{K : Type u_4} [DivisionSemiring K] : IsSimpleOrder (Ideal K)
NNRat.instDistribSMul 📋 Mathlib.Algebra.Ring.Action.Rat
{R : Type u_1} [DivisionSemiring R] : DistribSMul ℚ≥0 R
NNRat.instIsScalarTowerRight 📋 Mathlib.Algebra.Ring.Action.Rat
{R : Type u_1} [DivisionSemiring R] : IsScalarTower ℚ≥0 R R
Polynomial.nnqsmul_eq_C_mul 📋 Mathlib.Algebra.Polynomial.Basic
{R : Type u} [DivisionSemiring R] (q : ℚ≥0) (f : Polynomial R) : q • f = Polynomial.C ↑q * f
Submodule.mem_smul_iff_inv_mul_mem 📋 Mathlib.Algebra.Algebra.Operations
{R : Type u} [CommSemiring R] {S : Type u_1} [DivisionSemiring S] [Algebra R S] {x : S} {p : Submodule R S} {y : S} (hx : x ≠ 0) : y ∈ x • p ↔ x⁻¹ * y ∈ p
DivisionSemiring.isPrincipalIdealRing 📋 Mathlib.RingTheory.PrincipalIdealDomain
(K : Type u) [DivisionSemiring K] : IsPrincipalIdealRing K
AddOpposite.instDivisionSemiring 📋 Mathlib.Algebra.Field.Opposite
{α : Type u_1} [DivisionSemiring α] : DivisionSemiring αᵃᵒᵖ
MulOpposite.instDivisionSemiring 📋 Mathlib.Algebra.Field.Opposite
{α : Type u_1} [DivisionSemiring α] : DivisionSemiring αᵐᵒᵖ
star_nnratCast 📋 Mathlib.Algebra.Star.Rat
{R : Type u_1} [DivisionSemiring R] [StarRing R] (q : ℚ≥0) : star ↑q = ↑q
IsSelfAdjoint.nnratCast 📋 Mathlib.Algebra.Star.SelfAdjoint
{R : Type u_1} [DivisionSemiring R] [StarRing R] (q : ℚ≥0) : IsSelfAdjoint ↑q
nnratCast_smul_eq 📋 Mathlib.Algebra.Module.Rat
{E : Type u_3} (R : Type u_4) (S : Type u_5) [AddCommMonoid E] [DivisionSemiring R] [DivisionSemiring S] [Module R E] [Module S E] (r : ℚ≥0) (x : E) : ↑r • x = ↑r • x
NNRat.cast_smul_eq_nnqsmul 📋 Mathlib.Algebra.Module.Rat
{M : Type u_1} (R : Type u_3) [DivisionSemiring R] [MulAction R M] [MulAction ℚ≥0 M] [IsScalarTower ℚ≥0 R M] (q : ℚ≥0) (x : M) : ↑q • x = q • x
map_nnratCast_smul 📋 Mathlib.Algebra.Module.Rat
{M : Type u_1} {M₂ : Type u_2} [AddCommMonoid M] [AddCommMonoid M₂] {F : Type u_3} [FunLike F M M₂] [AddMonoidHomClass F M M₂] (f : F) (R : Type u_4) (S : Type u_5) [DivisionSemiring R] [DivisionSemiring S] [Module R M] [Module S M₂] (c : ℚ≥0) (x : M) : f (↑c • x) = ↑c • f x
star_inv_natCast_smul 📋 Mathlib.Algebra.Star.Module
{R : Type u_1} {M : Type u_2} [DivisionSemiring R] [AddCommMonoid M] [Module R M] [StarAddMonoid M] (n : ℕ) (x : M) : star ((↑n)⁻¹ • x) = (↑n)⁻¹ • star x
Matrix.conjTranspose_inv_natCast_smul 📋 Mathlib.LinearAlgebra.Matrix.ConjTranspose
{m : Type u_2} {n : Type u_3} {R : Type u_5} {α : Type v} [DivisionSemiring R] [AddCommMonoid α] [StarAddMonoid α] [Module R α] (c : ℕ) (M : Matrix m n α) : ((↑c)⁻¹ • M).conjTranspose = (↑c)⁻¹ • M.conjTranspose
Matrix.conjTranspose_inv_ofNat_smul 📋 Mathlib.LinearAlgebra.Matrix.ConjTranspose
{m : Type u_2} {n : Type u_3} {R : Type u_5} {α : Type v} [DivisionSemiring R] [AddCommMonoid α] [StarAddMonoid α] [Module R α] (c : ℕ) [c.AtLeastTwo] (M : Matrix m n α) : ((OfNat.ofNat c)⁻¹ • M).conjTranspose = (OfNat.ofNat c)⁻¹ • M.conjTranspose
algebraMap.coe_inv 📋 Mathlib.Algebra.Algebra.Field
{R : Type u_1} (A : Type u_2) [Semifield R] [DivisionSemiring A] [Algebra R A] (r : R) : ↑r⁻¹ = (↑r)⁻¹
algebraMap.coe_zpow 📋 Mathlib.Algebra.Algebra.Field
{R : Type u_1} (A : Type u_2) [Semifield R] [DivisionSemiring A] [Algebra R A] (r : R) (z : ℤ) : ↑(r ^ z) = ↑r ^ z
algebraMap.coe_div 📋 Mathlib.Algebra.Algebra.Field
{R : Type u_1} (A : Type u_2) [Semifield R] [DivisionSemiring A] [Algebra R A] (r s : R) : ↑(r / s) = ↑r / ↑s
DivisionSemiring.toNNRatAlgebra 📋 Mathlib.Algebra.Algebra.Rat
{R : Type u_2} [DivisionSemiring R] [CharZero R] : Algebra ℚ≥0 R
NNRat.instSMulCommClass 📋 Mathlib.Algebra.Algebra.Rat
{R : Type u_2} {S : Type u_3} [DivisionSemiring S] [CharZero S] [SMul R S] [SMulCommClass R S S] : SMulCommClass ℚ≥0 R S
NNRat.instSMulCommClass' 📋 Mathlib.Algebra.Algebra.Rat
{R : Type u_2} {S : Type u_3} [DivisionSemiring S] [CharZero S] [SMul R S] [SMulCommClass S R S] : SMulCommClass R ℚ≥0 S
RingHomClass.toLinearMapClassNNRat 📋 Mathlib.Algebra.Algebra.Rat
{F : Type u_1} {R : Type u_2} {S : Type u_3} [DivisionSemiring R] [CharZero R] [DivisionSemiring S] [CharZero S] [FunLike F R S] [RingHomClass F R S] : LinearMapClass F ℚ≥0 R S
Irreducible.natDegree_pos 📋 Mathlib.Algebra.Polynomial.FieldDivision
{F : Type u_1} [DivisionSemiring F] {f : Polynomial F} (h : Irreducible f) : 0 < f.natDegree
Irreducible.degree_pos 📋 Mathlib.Algebra.Polynomial.FieldDivision
{F : Type u_1} [DivisionSemiring F] {f : Polynomial F} (h : Irreducible f) : 0 < f.degree
DirectLimit.instDivisionSemiring 📋 Mathlib.Algebra.Colimit.DirectLimit
{ι : Type u_2} [Preorder ι] {G : ι → Type u_3} {T : ⦃i j : ι⦄ → i ≤ j → Type u_6} {f : (x x_1 : ι) → (h : x ≤ x_1) → T h} [(i j : ι) → (h : i ≤ j) → FunLike (T h) (G i) (G j)] [DirectedSystem G fun x1 x2 x3 => ⇑(f x1 x2 x3)] [IsDirectedOrder ι] [Nonempty ι] [(i : ι) → DivisionSemiring (G i)] [∀ (i j : ι) (h : i ≤ j), RingHomClass (T h) (G i) (G j)] : DivisionSemiring (DirectLimit G f)
DirectLimit.nnratCast_def 📋 Mathlib.Algebra.Colimit.DirectLimit
{ι : Type u_2} [Preorder ι] {G : ι → Type u_3} {T : ⦃i j : ι⦄ → i ≤ j → Type u_6} {f : (x x_1 : ι) → (h : x ≤ x_1) → T h} [(i j : ι) → (h : i ≤ j) → FunLike (T h) (G i) (G j)] [DirectedSystem G fun x1 x2 x3 => ⇑(f x1 x2 x3)] [IsDirectedOrder ι] [Nonempty ι] [(i : ι) → DivisionSemiring (G i)] [∀ (i j : ι) (h : i ≤ j), RingHomClass (T h) (G i) (G j)] (q : ℚ≥0) (i : ι) : ↑q = ⟦⟨i, ↑q⟩⟧
DirectLimit.lift_nnratCast 📋 Mathlib.Algebra.Colimit.DirectLimit
{ι : Type u_2} [Preorder ι] {G : ι → Type u_3} {H : ι → Type u_4} {C : Type u_5} {T : ⦃i j : ι⦄ → i ≤ j → Type u_6} {f : (x x_1 : ι) → (h : x ≤ x_1) → T h} [(i j : ι) → (h : i ≤ j) → FunLike (T h) (G i) (G j)] [(i : ι) → FunLike (H i) (G i) C] [DirectedSystem G fun x1 x2 x3 => ⇑(f x1 x2 x3)] [IsDirectedOrder ι] [Nonempty ι] [(i : ι) → DivisionSemiring (G i)] [DivisionSemiring C] [∀ (i j : ι) (h : i ≤ j), RingHomClass (T h) (G i) (G j)] [∀ (i : ι), RingHomClass (H i) (G i) C] (g : (i : ι) → H i) (h : ∀ (i j : ι) (h : i ≤ j) (x : G i), (g i) x = (g j) ((f i j h) x)) (q : ℚ≥0) : DirectLimit.lift f (fun x => ⇑(g x)) h ↑q = ↑q
Finset.sum_div 📋 Mathlib.Algebra.BigOperators.Field
{ι : Type u_1} {K : Type u_2} [DivisionSemiring K] (s : Finset ι) (f : ι → K) (a : K) : (∑ i ∈ s, f i) / a = ∑ i ∈ s, f i / a
Multiset.sum_map_div 📋 Mathlib.Algebra.BigOperators.Field
{ι : Type u_1} {K : Type u_2} [DivisionSemiring K] (s : Multiset ι) (f : ι → K) (a : K) : (Multiset.map (fun x => f x / a) s).sum = (Multiset.map f s).sum / a
TrivSqZeroExt.inv_inr 📋 Mathlib.Algebra.TrivSqZeroExt.Basic
{R : Type u} {M : Type v} [DivisionSemiring R] [AddCommGroup M] [Module Rᵐᵒᵖ M] [Module R M] (m : M) : (TrivSqZeroExt.inr m)⁻¹ = 0
TrivSqZeroExt.inv_inl 📋 Mathlib.Algebra.TrivSqZeroExt.Basic
{R : Type u} {M : Type v} [DivisionSemiring R] [AddCommGroup M] [Module Rᵐᵒᵖ M] [Module R M] (r : R) : (TrivSqZeroExt.inl r)⁻¹ = TrivSqZeroExt.inl r⁻¹
TrivSqZeroExt.inv_zero 📋 Mathlib.Algebra.TrivSqZeroExt.Basic
{R : Type u} {M : Type v} [DivisionSemiring R] [AddCommGroup M] [Module Rᵐᵒᵖ M] [Module R M] : 0⁻¹ = 0
TrivSqZeroExt.inv_one 📋 Mathlib.Algebra.TrivSqZeroExt.Basic
{R : Type u} {M : Type v} [DivisionSemiring R] [AddCommGroup M] [Module Rᵐᵒᵖ M] [Module R M] : 1⁻¹ = 1
TrivSqZeroExt.inv_mul_cancel 📋 Mathlib.Algebra.TrivSqZeroExt.Basic
{R : Type u} {M : Type v} [DivisionSemiring R] [AddCommGroup M] [Module Rᵐᵒᵖ M] [Module R M] {x : TrivSqZeroExt R M} (hx : x.fst ≠ 0) : x⁻¹ * x = 1
TrivSqZeroExt.isUnit_inv_iff 📋 Mathlib.Algebra.TrivSqZeroExt.Basic
{R : Type u} {M : Type v} [DivisionSemiring R] [AddCommGroup M] [Module Rᵐᵒᵖ M] [Module R M] [SMulCommClass R Rᵐᵒᵖ M] {x : TrivSqZeroExt R M} : IsUnit x⁻¹ ↔ IsUnit x
TrivSqZeroExt.inv_inv 📋 Mathlib.Algebra.TrivSqZeroExt.Basic
{R : Type u} {M : Type v} [DivisionSemiring R] [AddCommGroup M] [Module Rᵐᵒᵖ M] [Module R M] [SMulCommClass R Rᵐᵒᵖ M] {x : TrivSqZeroExt R M} (hx : x.fst ≠ 0) : x⁻¹⁻¹ = x
TrivSqZeroExt.mul_inv_cancel 📋 Mathlib.Algebra.TrivSqZeroExt.Basic
{R : Type u} {M : Type v} [DivisionSemiring R] [AddCommGroup M] [Module Rᵐᵒᵖ M] [Module R M] [SMulCommClass R Rᵐᵒᵖ M] {x : TrivSqZeroExt R M} (hx : x.fst ≠ 0) : x * x⁻¹ = 1
TrivSqZeroExt.invOf_eq_inv 📋 Mathlib.Algebra.TrivSqZeroExt.Basic
{R : Type u} {M : Type v} [DivisionSemiring R] [AddCommGroup M] [Module Rᵐᵒᵖ M] [Module R M] [SMulCommClass R Rᵐᵒᵖ M] (x : TrivSqZeroExt R M) [Invertible x] : ⅟x = x⁻¹
TrivSqZeroExt.mul_inv_rev 📋 Mathlib.Algebra.TrivSqZeroExt.Basic
{R : Type u} {M : Type v} [DivisionSemiring R] [AddCommGroup M] [Module Rᵐᵒᵖ M] [Module R M] [SMulCommClass R Rᵐᵒᵖ M] (a b : TrivSqZeroExt R M) : (a * b)⁻¹ = b⁻¹ * a⁻¹
LinearMap.surjective 📋 Mathlib.Algebra.Module.LinearMap.DivisionRing
{R : Type u_1} {M : Type u_2} [AddCommMonoid M] [DivisionSemiring R] [Module R M] {f : M →ₗ[R] R} : f ≠ 0 → Function.Surjective ⇑f
LinearMap.surjective_iff_ne_zero 📋 Mathlib.Algebra.Module.LinearMap.DivisionRing
{R : Type u_1} {M : Type u_2} [AddCommMonoid M] [DivisionSemiring R] [Module R M] {f : M →ₗ[R] R} : Function.Surjective ⇑f ↔ f ≠ 0
LinearMap.range_smulRight_apply 📋 Mathlib.Algebra.Module.LinearMap.DivisionRing
{R : Type u_1} {M : Type u_2} {M₁ : Type u_3} [AddCommMonoid M] [AddCommMonoid M₁] [DivisionSemiring R] [Module R M] [Module R M₁] {f : M →ₗ[R] R} (hf : f ≠ 0) (x : M₁) : (f.smulRight x).range = R ∙ x
Module.Dual.range_eq_top_of_ne_zero 📋 Mathlib.LinearAlgebra.Dual.Lemmas
{K : Type u_3} {V₁ : Type u_4} [DivisionSemiring K] [AddCommMonoid V₁] [Module K V₁] {f : Module.Dual K V₁} (hf : f ≠ 0) : LinearMap.range f = ⊤
Nat.cast_div_charZero 📋 Mathlib.Data.Nat.Cast.Field
{K : Type u_1} [DivisionSemiring K] {m n : ℕ} [CharZero K] (hnm : n ∣ m) : ↑(m / n) = ↑m / ↑n
Nat.cast_div 📋 Mathlib.Data.Nat.Cast.Field
{K : Type u_1} [DivisionSemiring K] {m n : ℕ} (hnm : n ∣ m) (hn : ↑n ≠ 0) : ↑(m / n) = ↑m / ↑n
Nat.cast_div_div_div_cancel_right 📋 Mathlib.Data.Nat.Cast.Field
{K : Type u_1} [DivisionSemiring K] {d m n : ℕ} [CharZero K] (hn : d ∣ n) (hm : d ∣ m) : ↑(m / d) / ↑(n / d) = ↑m / ↑n
Set.image_affine_Icc' 📋 Mathlib.Algebra.Order.Group.Pointwise.Interval
{K : Type u_2} [DivisionSemiring K] [PartialOrder K] [PosMulReflectLT K] [IsOrderedCancelAddMonoid K] [ExistsAddOfLE K] {a : K} (h : 0 < a) (b c d : K) : (fun x => a * x + b) '' Set.Icc c d = Set.Icc (a * c + b) (a * d + b)
Set.image_affine_Ico 📋 Mathlib.Algebra.Order.Group.Pointwise.Interval
{K : Type u_2} [DivisionSemiring K] [PartialOrder K] [PosMulReflectLT K] [IsOrderedCancelAddMonoid K] [ExistsAddOfLE K] {a : K} (h : 0 < a) (b c d : K) : (fun x => a * x + b) '' Set.Ico c d = Set.Ico (a * c + b) (a * d + b)
Set.image_affine_Ioc 📋 Mathlib.Algebra.Order.Group.Pointwise.Interval
{K : Type u_2} [DivisionSemiring K] [PartialOrder K] [PosMulReflectLT K] [IsOrderedCancelAddMonoid K] [ExistsAddOfLE K] {a : K} (h : 0 < a) (b c d : K) : (fun x => a * x + b) '' Set.Ioc c d = Set.Ioc (a * c + b) (a * d + b)
Set.image_affine_Ioo 📋 Mathlib.Algebra.Order.Group.Pointwise.Interval
{K : Type u_2} [DivisionSemiring K] [PartialOrder K] [PosMulReflectLT K] [IsOrderedCancelAddMonoid K] [ExistsAddOfLE K] {a : K} (h : 0 < a) (b c d : K) : (fun x => a * x + b) '' Set.Ioo c d = Set.Ioo (a * c + b) (a * d + b)
Nonneg.unitsHomeomorphPos 📋 Mathlib.Topology.Algebra.Field
(R : Type u_2) [DivisionSemiring R] [PartialOrder R] [IsStrictOrderedRing R] [PosMulReflectLT R] [TopologicalSpace R] [ContinuousInv₀ R] : (Nonneg R)ˣ ≃ₜ { r // 0 < r }
Nonneg.unitsHomeomorphPos_apply_coe 📋 Mathlib.Topology.Algebra.Field
(R : Type u_2) [DivisionSemiring R] [PartialOrder R] [IsStrictOrderedRing R] [PosMulReflectLT R] [TopologicalSpace R] [ContinuousInv₀ R] (r : (Nonneg R)ˣ) : ↑((Nonneg.unitsHomeomorphPos R) r) = ↑↑r
Nonneg.val_unitsHomeomorphPos_symm_apply_coe 📋 Mathlib.Topology.Algebra.Field
(R : Type u_2) [DivisionSemiring R] [PartialOrder R] [IsStrictOrderedRing R] [PosMulReflectLT R] [TopologicalSpace R] [ContinuousInv₀ R] (r : { r // 0 < r }) : ↑↑((Nonneg.unitsHomeomorphPos R).symm r) = ↑r
Nonneg.val_inv_unitsHomeomorphPos_symm_apply_coe 📋 Mathlib.Topology.Algebra.Field
(R : Type u_2) [DivisionSemiring R] [PartialOrder R] [IsStrictOrderedRing R] [PosMulReflectLT R] [TopologicalSpace R] [ContinuousInv₀ R] (r : { r // 0 < r }) : ↑↑((Nonneg.unitsHomeomorphPos R).symm r)⁻¹ = (↑r)⁻¹
Nat.cast_choose 📋 Mathlib.Data.Nat.Choose.Cast
(K : Type u_1) [DivisionSemiring K] [CharZero K] {a b : ℕ} (h : a ≤ b) : ↑(b.choose a) = ↑b.factorial / (↑a.factorial * ↑(b - a).factorial)
Nat.cast_add_choose 📋 Mathlib.Data.Nat.Choose.Cast
(K : Type u_1) [DivisionSemiring K] [CharZero K] {a b : ℕ} : ↑((a + b).choose a) = ↑(a + b).factorial / (↑a.factorial * ↑b.factorial)
Polynomial.Splits.of_natDegree_eq_one 📋 Mathlib.Algebra.Polynomial.Splits
{R : Type u_1} [DivisionSemiring R] {f : Polynomial R} (hf : f.natDegree = 1) : f.Splits
Polynomial.Splits.of_natDegree_le_one 📋 Mathlib.Algebra.Polynomial.Splits
{R : Type u_1} [DivisionSemiring R] {f : Polynomial R} (hf : f.natDegree ≤ 1) : f.Splits
Polynomial.Splits.of_degree_eq_one 📋 Mathlib.Algebra.Polynomial.Splits
{R : Type u_1} [DivisionSemiring R] {f : Polynomial R} (hf : f.degree = 1) : f.Splits
Polynomial.Splits.of_degree_le_one 📋 Mathlib.Algebra.Polynomial.Splits
{R : Type u_1} [DivisionSemiring R] {f : Polynomial R} (hf : f.degree ≤ 1) : f.Splits
ContinuousLinearMap.range_smulRight_apply 📋 Mathlib.Topology.Algebra.Module.ContinuousLinearMap.Basic
{M₁ : Type u_4} [TopologicalSpace M₁] [AddCommMonoid M₁] {M₂ : Type u_6} [TopologicalSpace M₂] [AddCommMonoid M₂] {R : Type u_9} [DivisionSemiring R] [Module R M₁] [Module R M₂] [TopologicalSpace R] [ContinuousSMul R M₂] {f : M₁ →L[R] R} (hf : f ≠ 0) (x : M₂) : (↑(f.smulRight x)).range = R ∙ x
invertibleSucc 📋 Mathlib.Algebra.CharP.Invertible
{K : Type u_2} [DivisionSemiring K] [CharZero K] (n : ℕ) : Invertible ↑n.succ
invertibleThree 📋 Mathlib.Algebra.CharP.Invertible
{K : Type u_2} [DivisionSemiring K] [CharZero K] : Invertible 3
invertibleTwo 📋 Mathlib.Algebra.CharP.Invertible
{K : Type u_2} [DivisionSemiring K] [CharZero K] : Invertible 2
AddCommGroup.div_modEq_div 📋 Mathlib.Algebra.Field.ModEq
{K : Type u_1} [DivisionSemiring K] {a b c p : K} (hc : c ≠ 0) : a / c ≡ b / c [PMOD p] ↔ a ≡ b [PMOD p * c]
AddCommGroup.mul_modEq_mul_right 📋 Mathlib.Algebra.Field.ModEq
{K : Type u_1} [DivisionSemiring K] {a b c p : K} (hc : c ≠ 0) : a * c ≡ b * c [PMOD p] ↔ a ≡ b [PMOD p / c]
Function.Periodic.div_const 📋 Mathlib.Algebra.Field.Periodic
{α : Type u_1} {β : Type u_2} {f : α → β} {c : α} [DivisionSemiring α] (h : Function.Periodic f c) (a : α) : Function.Periodic (fun x => f (x / a)) (c * a)
Function.Periodic.mul_const' 📋 Mathlib.Algebra.Field.Periodic
{α : Type u_1} {β : Type u_2} {f : α → β} {c : α} [DivisionSemiring α] (h : Function.Periodic f c) (a : α) : Function.Periodic (fun x => f (x * a)) (c / a)
Function.Periodic.const_inv_mul 📋 Mathlib.Algebra.Field.Periodic
{α : Type u_1} {β : Type u_2} {f : α → β} {c : α} [DivisionSemiring α] (h : Function.Periodic f c) (a : α) : Function.Periodic (fun x => f (a⁻¹ * x)) (a * c)
Function.Periodic.const_mul 📋 Mathlib.Algebra.Field.Periodic
{α : Type u_1} {β : Type u_2} {f : α → β} {c : α} [DivisionSemiring α] (h : Function.Periodic f c) (a : α) : Function.Periodic (fun x => f (a * x)) (a⁻¹ * c)
Function.Periodic.mul_const 📋 Mathlib.Algebra.Field.Periodic
{α : Type u_1} {β : Type u_2} {f : α → β} {c : α} [DivisionSemiring α] (h : Function.Periodic f c) (a : α) : Function.Periodic (fun x => f (x * a)) (c * a⁻¹)
Function.Periodic.mul_const_inv 📋 Mathlib.Algebra.Field.Periodic
{α : Type u_1} {β : Type u_2} {f : α → β} {c : α} [DivisionSemiring α] (h : Function.Periodic f c) (a : α) : Function.Periodic (fun x => f (x * a⁻¹)) (c * a)
Function.Antiperiodic.div_inv 📋 Mathlib.Algebra.Field.Periodic
{α : Type u_1} {β : Type u_2} {f : α → β} {c : α} [DivisionSemiring α] [Neg β] (h : Function.Antiperiodic f c) {a : α} (ha : a ≠ 0) : Function.Antiperiodic (fun x => f (x / a)) (c * a)
Function.Antiperiodic.mul_const' 📋 Mathlib.Algebra.Field.Periodic
{α : Type u_1} {β : Type u_2} {f : α → β} {c : α} [DivisionSemiring α] [Neg β] (h : Function.Antiperiodic f c) {a : α} (ha : a ≠ 0) : Function.Antiperiodic (fun x => f (x * a)) (c / a)
Function.Antiperiodic.const_inv_mul 📋 Mathlib.Algebra.Field.Periodic
{α : Type u_1} {β : Type u_2} {f : α → β} {c : α} [DivisionSemiring α] [Neg β] (h : Function.Antiperiodic f c) {a : α} (ha : a ≠ 0) : Function.Antiperiodic (fun x => f (a⁻¹ * x)) (a * c)
Function.Antiperiodic.const_mul 📋 Mathlib.Algebra.Field.Periodic
{α : Type u_1} {β : Type u_2} {f : α → β} {c : α} [DivisionSemiring α] [Neg β] (h : Function.Antiperiodic f c) {a : α} (ha : a ≠ 0) : Function.Antiperiodic (fun x => f (a * x)) (a⁻¹ * c)

About

Loogle searches Lean and Mathlib definitions and theorems.

You can use Loogle from within the Lean4 VSCode language extension using the Loogle command from the command palette. You can also try the #loogle command from LeanSearchClient, the CLI version, the Loogle VS Code extension, the lean.nvim integration or the Zulip bot.

Usage

Loogle finds definitions and lemmas in various ways:

By constant:
🔍 Real.sin
finds all lemmas whose statement somehow mentions the sine function.
By lemma name substring:
🔍 "differ"
finds all lemmas that have "differ" somewhere in their lemma name.
By subexpression:
🔍 _ * (_ ^ _)
finds all lemmas whose statements somewhere include a product where the second argument is raised to some power.

The pattern can also be non-linear, as in
🔍 Real.sqrt ?a * Real.sqrt ?a

If the pattern has parameters, they are matched in any order. Both of these will find List.map:
🔍 (?a -> ?b) -> List ?a -> List ?b
🔍 List ?a -> (?a -> ?b) -> List ?b
By main conclusion:
🔍 |- tsum _ = _ * tsum _
finds all lemmas where the conclusion (the subexpression to the right of all → and ∀) has the given shape.

As before, if the pattern has parameters, they are matched against the hypotheses of the lemma in any order; for example,
🔍 |- _ < _ → tsum _ < tsum _
will find tsum_lt_tsum even though the hypothesis f i < g i is not the last.
You can filter for definitions vs theorems: Using ⊢ (_ : Type _) finds all definitions which provide data while ⊢ (_ : Prop) finds all theorems (and definitions of proofs).

If you pass more than one such search filter, separated by commas Loogle will return lemmas which match all of them. The search
🔍 Real.sin, "two", tsum, _ * _, _ ^ _, |- _ < _ → _
would find all lemmas which mention the constants Real.sin and tsum, have "two" as a substring of the lemma name, include a product and a power somewhere in the type, and have a hypothesis of the form _ < _ (if there were any such lemmas). Metavariables (?a) are assigned independently in each filter.

The #lucky button will directly send you to the documentation of the first hit.

Source code

You can find the source code for this service at https://github.com/nomeata/loogle. The https://loogle.lean-lang.org/ service is provided by the Lean FRO. Please review the Lean FRO Terms of Use and Privacy Policy.

This is Loogle revision 9f11169 serving mathlib revision 69fae59