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声明

add_left_cancel

Mathlib.Algebra.Ring

2

模块

63

定理

750

声明

1016

非可信 sidecar

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陈述

forall (a : RingElem), forall (b : RingElem), forall (c : RingElem), forall (h : @Eq.{1} RingElem (add a b) (add a c)), @Eq.{1} RingElem b c

证明项

fun a => fun b => fun c => fun h => @RingElem.rec.{0} (fun (x : RingElem) => @Eq.{1} RingElem x c) (@RingElem.rec.{0} (fun (y : RingElem) => @Eq.{1} RingElem RingElem.unit y) (@Eq.refl.{1} RingElem RingElem.unit) c) b

常量