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improve pynac's expand method for powers #31337

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DaveWitteMorris opened this issue Feb 4, 2021 · 0 comments
Open

improve pynac's expand method for powers #31337

DaveWitteMorris opened this issue Feb 4, 2021 · 0 comments
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c: symbolics p: minor / 4 t: enhancement

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@DaveWitteMorris
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To eliminate an infinite loop, ticket #30688 deleted one of pynac's expansion rules for powers of a product: expanding (a1*a2*...*a_n)^c no longer pulls out a factor of (-ai)^c when ai is negative. (But the factor (ai)^c will still be pulled out if ai is positive.) We should reimplement a version of this rule that does not crash sage.

Component: symbolics

Issue created by migration from https://trac.sagemath.org/ticket/31337
@DaveWitteMorris DaveWitteMorris added this to the sage-9.4 milestone Feb 4, 2021
@mkoeppe mkoeppe modified the milestones: sage-9.4, sage-9.5 Aug 9, 2021
@mkoeppe mkoeppe modified the milestones: sage-9.5, sage-9.6 Dec 18, 2021
@mkoeppe mkoeppe modified the milestones: sage-9.6, sage-9.7 Apr 1, 2022
@mkoeppe mkoeppe modified the milestones: sage-9.7, sage-9.8 Aug 31, 2022
@mkoeppe mkoeppe removed this from the sage-9.8 milestone Jan 29, 2023
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