#15364: Introduce factor_or_zero into global namespace
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Reporter: zabrocki | Owner:
Type: PLEASE CHANGE | Status: new
Priority: major | Milestone: sage-5.13
Component: factorization | Keywords:
Merged in: | Authors: Mike Zabrocki
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
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The current top level factor command raises an error if factor is applied
to 0. This is inconvenient for trying to factor polynomial expressions
which reduce to 0 or lists of integers.
A function which does not force the user to handle 0 as a corner case is
SUPER useful for users who just want to observe patterns in factorizations
of lists or expressions that might reduce to 0. The error message of
factor should indicate to the user to call `factor_or_zero` an error
message such as `ArithmeticError: Prime factorization of 0 not defined.
Use factor_or_zero to return 0 as the factorization of 0.`
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Ticket URL: <http://trac.sagemath.org/ticket/15364>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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