#11641: Implementation of a guesser of combinatoral statistics
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Reporter: stumpc5 | Owner: sage-combinat
Type: enhancement | Status: new
Priority: major | Milestone: sage-pending
Component: combinatorics | Keywords: combinatorial
statistic
Work_issues: make it nice and smooth | Upstream: N/A
Reviewer: | Author: Chris Berg, Franco
Saliola, Christian Stump
Merged: | Dependencies:
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Description changed by stumpc5:
Old description:
> tba
New description:
An example:
{{{
sage: I = [
p,p.major_index()+2*p.number_of_inversions()-34*p.number_of_descents())
for p in Permutations(3) ]
sage: find_combinatorial_statistic(I)
The tested combinatorial statistics on Standard permutations with values
in Integer Ring where
imajor_index
longest_increasing_subsequence_length
major_index
number_of_descents
number_of_fixed_points
number_of_idescents
number_of_inversions
number_of_peaks
number_of_saliances
((0, 0, 1, -34, 0, 0, 2, 0, 0), Free module of degree 9 and rank 3 over
Integer Ring
Echelon basis matrix:
[ 3 0 0 0 2 -4 5 3 -6]
[ 0 1 3 0 -1 -3 -1 -3 0]
[ 0 0 0 1 0 -1 0 0 0])
}}}
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11641#comment:1>
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