#13413: fix integer overflow (?) in conversion of powersums to Schur functions
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Reporter: saliola | Owner: sage-
Type: defect | combinat
Priority: critical | Status: new
Component: combinatorics | Milestone: sage-5.13
Keywords: symmetric functions, | Resolution:
symmetrica, memleak | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Comment (by zabrocki):
This is bad. Technically any calculation that involves the p basis over
degree 20 and other bases of degree 30+ should be suspect. I make this
assessment because it seems that the integer calculations with
coefficients using 64 bits may be a problem. If you check
`sage.combinat.sf.sfa.zee(la)` for `la` partitions of 21 and the number of
standard tableaux of degree 35 have values `> 2**64`.
I can understand C, but it is a bit rusty for me. The fact that the C is
written in German makes it slightly more of a challenge since for some
functions I really have to make wild guesses.
--
Ticket URL: <http://trac.sagemath.org/ticket/13413#comment:14>
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