#4540: Symmetrica segfault converting Schur functions to k-Schurs
---------------------------+------------------------------------------------
Reporter: jbandlow | Owner: mhansen
Type: defect | Status: new
Priority: major | Milestone: sage-3.2.1
Component: combinatorics | Keywords: kschur, symmetrica, segfault
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Example:
{{{
sage: ks3 = kSchurFunctions(QQ,3,1) # k-Schur functions without a 't'
variable
sage: s = SFASchur(base_ring())
sage: ks3(s([3]))
Exception exceptions.TypeError: 'cannot convert a (= 1) to OP' in
'sage.libs.symmetrica.symmetrica._op_schur_general_dict' ignored
function: mult(1)
python: mult(1): Unknown error 3052408646
}}}
I don't know if the definition of ks3 above was ever intended to be
supported. I just tried it because I wanted k-Schur functions without a
't' and it seemed the natural thing to do. Conversions the other way
(i.e., s(ks3([3])) ) do seem to work. And, whether it's intended to be
supported or not, segfaults are bad.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/4540>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of
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