Title 
User 
Message 
Date Posted 
oh i see thanks 
dAedaL 

Nov 05, 2008  11:43:55 pm UTC 
... 
jargon 
Because you do it in reverse order. You first do [1 3 2] = (a c b), then [3 2 1] = (b c a) 
Nov 05, 2008  11:41:18 pm UTC 
... 
dAedaL 
why is [3 2 1][1 3 2](a b c) = (b c a) shouldn't it be (a b c) [3 2 1] (c b a) [1 3 2] (c a b) (c a b)? 
Nov 05, 2008  2:12:40 am UTC 
oh alright thanks 
dAedaL 

Oct 27, 2008  12:12:06 am UTC 
Re: Permutation matrices 
bbi5291 
Probably [4 2 1 3] means "the fourth character followed by the second followed by the first followed by the third", giving (d b a c). It isn't clear that it doesn't mean the inverse of this permutatio... 
Oct 26, 2008  10:51:13 pm UTC 
I don't understand the permutation matrices >> 
dAedaL 
so what would the counterchallenge be if the challenge was (a b c d) and the permutation was [4 2 1 3] ? 
Oct 26, 2008  10:34:44 pm UTC 