#19065: A few fixes and enhancements for chain complex morphisms
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Reporter: jhpalmieri | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-6.9
Component: algebraic topology | Keywords:
Merged in: | Authors: John Palmieri
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
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This ticket addresses several issues:
- when defining chain complex morphisms, we don't check the size of the
defining matrices, and we should.
- the `__mul__` method multiplies the factors in the wrong order.
- it may be useful to have an `in_degree` method: `f.in_degree(5)` will
return the matrix defining `f` in degree 5.
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Ticket URL: <http://trac.sagemath.org/ticket/19065>
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