mathlib3 documentation

algebra.order.field.inj_surj

Pulling back linearly ordered fields along injective maps. #

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@[reducible]
def function.injective.linear_ordered_semifield {α : Type u_2} {β : Type u_3} [linear_ordered_semifield α] [has_zero β] [has_one β] [has_add β] [has_mul β] [has_pow β ℕ] [has_smul ℕ β] [has_nat_cast β] [has_inv β] [has_div β] [has_pow β ℤ] [has_sup β] [has_inf β] (f : β → α) (hf : function.injective f) (zero : f 0 = 0) (one : f 1 = 1) (add : ∀ (x y : β), f (x + y) = f x + f y) (mul : ∀ (x y : β), f (x * y) = f x * f y) (inv : ∀ (x : β), f x⁻¹ = (f x)⁻¹) (div : ∀ (x y : β), f (x / y) = f x / f y) (nsmul : ∀ (x : β) (n : ℕ), f (n • x) = n • f x) (npow : ∀ (x : β) (n : ℕ), f (x ^ n) = f x ^ n) (zpow : ∀ (x : β) (n : ℤ), f (x ^ n) = f x ^ n) (nat_cast : ∀ (n : ℕ), f ↑n = ↑n) (hsup : ∀ (x y : β), f (x ⊔ y) = linear_order.max (f x) (f y)) (hinf : ∀ (x y : β), f (x ⊓ y) = linear_order.min (f x) (f y)) :

Pullback a linear_ordered_semifield under an injective map.

Equations
@[reducible]
def function.injective.linear_ordered_field {α : Type u_2} {β : Type u_3} [linear_ordered_field α] [has_zero β] [has_one β] [has_add β] [has_mul β] [has_neg β] [has_sub β] [has_pow β ℕ] [has_smul ℕ β] [has_smul ℤ β] [has_smul ℚ β] [has_nat_cast β] [has_int_cast β] [has_rat_cast β] [has_inv β] [has_div β] [has_pow β ℤ] [has_sup β] [has_inf β] (f : β → α) (hf : function.injective f) (zero : f 0 = 0) (one : f 1 = 1) (add : ∀ (x y : β), f (x + y) = f x + f y) (mul : ∀ (x y : β), f (x * y) = f x * f y) (neg : ∀ (x : β), f (-x) = -f x) (sub : ∀ (x y : β), f (x - y) = f x - f y) (inv : ∀ (x : β), f x⁻¹ = (f x)⁻¹) (div : ∀ (x y : β), f (x / y) = f x / f y) (nsmul : ∀ (x : β) (n : ℕ), f (n • x) = n • f x) (zsmul : ∀ (x : β) (n : ℤ), f (n • x) = n • f x) (qsmul : ∀ (x : β) (n : ℚ), f (n • x) = n • f x) (npow : ∀ (x : β) (n : ℕ), f (x ^ n) = f x ^ n) (zpow : ∀ (x : β) (n : ℤ), f (x ^ n) = f x ^ n) (nat_cast : ∀ (n : ℕ), f ↑n = ↑n) (int_cast : ∀ (n : ℤ), f ↑n = ↑n) (rat_cast : ∀ (n : ℚ), f ↑n = ↑n) (hsup : ∀ (x y : β), f (x ⊔ y) = linear_order.max (f x) (f y)) (hinf : ∀ (x y : β), f (x ⊓ y) = linear_order.min (f x) (f y)) :

Pullback a linear_ordered_field under an injective map.

Equations