Macaulay2 / Macaulay2/M2

poincare in presence of degree zero variables

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Macaulay2
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Description

Perhaps it should give an error instead:

i1 : R = kk[x,y, Degrees => {0,1}]

o1 = R

o1 : PolynomialRing

i2 : poincare ideal (x,y)

o2 = 0

o2 : ZZ[T]

i8 : poincare ideal (x+y^2)

          2
o8 = 1 - T

o8 : ZZ[T]

c.f. https://github.com/Macaulay2/M2/issues/909

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Research direction

Reproduce the two poincare examples in the issue and compare the expected behavior with the related discussion in issue 909. The report does not name an implementation file or test; done should include a decided behavior for degree-zero variables and coverage for these examples.

Written by the indexing model from the issue text.

Assessment

Domain
tooling
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
30/100

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