#5171: Bugs in the Graph constructor when input an adjacency matrix.
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Reporter: was | Owner: rlm
Type: defect | Status: new
Priority: critical | Milestone: sage-3.3
Component: graph theory | Resolution:
Keywords: |
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Comment (by jason):
William: when the matrix is non-square, we are assuming it is an incidence
matrix; the error message is perfect. See
http://en.wikipedia.org/wiki/Incidence_matrix.
However, it's not the first time that I've been frustrated with the
behavior completely being different when a small change in input happens.
In fact, I remember complaining about the adjacency matrix/incidence
matrix assumptions a long time ago. I think it was part of one of my
grand re-architecting schemes, though, so it got abandoned eventually :).
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/5171#comment:1>
Sage <http://sagemath.org/>
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