http://blog.mikael.johanssons.org/archive/2007/08/coq-and-simple-group-theory/ Because my LiveJournal is too silly Mon, 15 Mar 2010 18:50:59 +0100 http://wordpress.org/?v=2.8.6 hourly 1 http://blog.mikael.johanssons.org/archive/2007/08/coq-and-simple-group-theory/comment-page-1/#comment-32853 Carnival of Math #18 « JD2718 Sat, 06 Oct 2007 16:00:03 +0000 http://blog.mikael.johanssons.org/archive/2007/08/coq-and-simple-group-theory/#comment-32853 [...] Blog Coq and simple group theory (see title) “Trying to make the time until my flight leaves tomorrow go by, I played around a [...] [...] Blog Coq and simple group theory (see title) “Trying to make the time until my flight leaves tomorrow go by, I played around a [...]

]]> http://blog.mikael.johanssons.org/archive/2007/08/coq-and-simple-group-theory/comment-page-1/#comment-23354 Michi Sun, 05 Aug 2007 21:47:05 +0000 http://blog.mikael.johanssons.org/archive/2007/08/coq-and-simple-group-theory/#comment-23354 Yeah, it is in the bit <code> Hypothesis rinv : forall x : U, m x (i x) = e. </code> which states the inverse condition, with the implicit diagonal Δ(x) = (x,x). Yeah, it is in the bit

Hypothesis rinv : forall x : U, m x (i x) = e.

which states the inverse condition, with the implicit diagonal Δ(x) = (x,x).

]]> http://blog.mikael.johanssons.org/archive/2007/08/coq-and-simple-group-theory/comment-page-1/#comment-23353 John Armstrong Sun, 05 Aug 2007 21:41:33 +0000 http://blog.mikael.johanssons.org/archive/2007/08/coq-and-simple-group-theory/#comment-23353 You don't explicitly specify a diagonal map, but it's implicit somewhere -- maybe in Coq itself. You can't state the inverse conditions without "duplicating" the variable so you can invert one copy. You don’t explicitly specify a diagonal map, but it’s implicit somewhere — maybe in Coq itself. You can’t state the inverse conditions without “duplicating” the variable so you can invert one copy.

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