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Adding Sequences does not respect universese #23371

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roed314 opened this issue Jul 5, 2017 · 0 comments
Open

Adding Sequences does not respect universese #23371

roed314 opened this issue Jul 5, 2017 · 0 comments
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c: coercion p: major / 3 t: bug

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@roed314
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roed314 commented Jul 5, 2017 

sage: foo = Sequence([], universe=ZZ)
sage: foo += [1/2]
sage: foo, foo.universe(), foo[0].parent()
([1/2], Integer Ring, Rational Field)

The solution is probably to override some additional functions in sage.structure.sequence.Sequence_generic, which inherits from list.

Component: coercion

Issue created by migration from https://trac.sagemath.org/ticket/23371
@roed314 roed314 added this to the sage-8.0 milestone Jul 5, 2017
@mkoeppe mkoeppe removed this from the sage-8.0 milestone Dec 29, 2022
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