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#### Description of the problem
```coq
Require Import ssreflect.
Variable x : nat.
Goal Nat.eqb (x + x + x) (3 * x) = true.
Proof.
set f := (fun x => X in X = true).
(*
E…
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#### Version
~~~~~
The Coq Proof Assistant, version 8.8.1 (July 2018)
compiled on Jul 5 2018 7:25:50 with OCaml 4.06.0
~~~~~
#### Operating system
Arch Linux, up to date as of yesterda…
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I'm prototyping a proof assistant written in Dyon and discovered a weakness in the meta converter language:
```
tactic := [name: str, forced: opt[bool]] =>
{
op:"tactic",
name: name…
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Topic 8 here describes this issue:
http://prosecco.gforge.inria.fr/personal/hritcu/students/topics/2016/fstar.pdf
Copying the text here for aiding text-based search:
Providing useful feedback whe…
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Greetings! I am a home assistant user and software developer who recently started working for Span. The local API is pretty far removed from my official job duties, but it's something I care about and…
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### Describe the issue you are experiencing
Only surfing `/core_deconz/ingress` and selecting "Phoscon" ("deCONZ" works just fine) creates failed logins for the client. When using HTTP security (ba…
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Hello.
I am new to Coq. My expectation is that `:Coq Check nat.` should write something along the lines of `nat : Set` to the Infos window. This is not the case: insofar as `CoqLaunch` was issued p…
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Basically a planner for the Akashi's Improvement Arsenal, so that the upgrade cost and completion date can be properly accounted.
Proof of concept:
http://kancolle.wikia.com/wiki/Sandbox/Akashi_Sched…
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#### Description of the problem
This code:
```coq
Class C1 : Type :=
{
A : Type;
}.
Coercion A : C1 >-> Sortclass.
Class C2 : Type :=
{
T :> C1;
}.
Coercion T : C2 >-> C1…
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I generally use "Require Import Utf8" and write all my coq programs using utf-8.
But exists unique under the form ∃! does not work. I must write "exists!".
Require Import Utf8.
Example toto : exi…
roglo updated
5 years ago