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Re: [Coq-Club] use the hypothesis "(a ?=0)%Z = Eq"

From: Tie Cheng <chengtie AT gmail.com>
To: Viktor Vafeiadis <viktor AT mpi-sws.org>
Cc: "coq-club AT inria.fr" <coq-club AT inria.fr>
Subject: Re: [Coq-Club] use the hypothesis "(a ?=0)%Z = Eq"
Date: Thu, 17 Feb 2011 22:31:59 +0100
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Hello Viktor,

Thanks for your reply.

If I do "apply Zcompare_Eq_eq", it changes the goal to "(a * something ?=0)%Z = Eq" which is not what I want. I want the goal to be "(0 * something)%Z = 0%Z". Is there a better way to use Zcompare_Eq_eq?

Regards

Tie

On Thu, Feb 17, 2011 at 9:25 PM, Viktor Vafeiadis <viktor AT mpi-sws.org> wrote:

Second lemma in Zcompare standard library.
Zcompare_Eq_eq

On 17 Feb 2011, at 21:20, Tie Cheng <chengtie AT gmail.com> wrote:

> hello all,
>
> I have a hypothesis "e: (a ?=0)%Z = Eq", my goal is " (a * something)%Z = 0%Z".
>
> Does anyone know how I could use the hypothesis? Is there a lemma to say "(a ?=0)%Z = Eq -> a=0%Z"?
>
> Thanks and regards
>
> Tie

[Coq-Club] use the hypothesis "(a ?=0)%Z = Eq", Tie Cheng
- Re: [Coq-Club] use the hypothesis "(a ?=0)%Z = Eq", Viktor Vafeiadis
  - Re: [Coq-Club] use the hypothesis "(a ?=0)%Z = Eq", Tie Cheng
    - Re: [Coq-Club] use the hypothesis "(a ?=0)%Z = Eq", gallais @ EnsL.org
    - Re: [Coq-Club] use the hypothesis "(a ?=0)%Z = Eq", St�phane Lescuyer
      - Re: [Coq-Club] use the hypothesis "(a ?=0)%Z = Eq", Tie Cheng