#5099: rank for mod n sparse matrices is broken
----------------------------+-----------------------------------------------
Reporter: jhpalmieri | Owner: was
Type: defect | Status: new
Priority: critical | Milestone: sage-3.3
Component: linear algebra | Keywords: sparse, rank
----------------------------+-----------------------------------------------
On both sage.math (sage 3.2.3) and on my iMac (sage 3.3.alpha1), running
{{{
matrix(GF(3), 0, 0, {}).rank()
}}}
is broken: sometimes I get 0, sometimes I get 1, sometimes I get
{{{RuntimeError}}}. Same goes for
{{{
matrix(GF(3), 0, 0, sparse=True).rank()
}}}
and
{{{
matrix(GF(3), 0, 10, sparse=True).rank()
}}}
For what it's worth, {{{matrix(GF(3), 10, 0, sparse=True).rank()}}} seems
okay.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/5099>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of
Reinventing the Wheel
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