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Merged
Observatorio-de-Matematica merged 1 commit into from
Oct 20, 2023
Merged

Add files via upload #1

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29 changes: 29 additions & 0 deletions Combinatorics.wxm
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Original file line number Diff line number Diff line change
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/* [wxMaxima batch file version 1] [ DO NOT EDIT BY HAND! ]*/
/* [ Created with wxMaxima version 22.04.0 ] */
/* [wxMaxima: input start ] */
/* Date: Wed Dec 28 20:19:35 WET 2011 */
/* Contributor: John Lapeyre */
/* Description: Returns the signature of a permutation */
SignaturePermutation(inp) := block(
[ n:length(inp), k, visited , p, knext, L, sgn:1],
visited : make_array(any,n),
p : make_array(any,n),
fillarray(p,inp),
for k : 0 thru n-1 do (
if not visited[k] then (
knext : k,
L : 0,
while not visited[knext] do (
L : L + 1,
visited[knext] : true,
knext : p[knext]-1 ),
if evenp(L) then sgn : -sgn )
),
sgn
)$
/* [wxMaxima: input end ] */



/* Old versions of Maxima abort on loading files that end in a comment. */
"Created with wxMaxima 22.04.0"$