#17777: unsigned infinity cannot be coerced into SR
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Reporter: rws | Owner:
Type: defect | Status: needs_info
Priority: major | Milestone: sage-7.2
Component: symbolics | Resolution:
Keywords: | Merged in:
Authors: Ralf Stephan | Reviewers: Karl-Dieter Crisman,
Report Upstream: N/A | Marc Mezzarobba
Branch: | Work issues:
u/mmezzarobba/17777-infinity_to_SR | Commit:
Dependencies: | 3a3fd027c33f1bab636ac761caf636ce8fe8bfad
| Stopgaps:
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Comment (by rws):
Replying to [comment:20 mmezzarobba]:
> Is there really no other way to make infinities and symbolic expression
play well together? For example, what about having `SR` coerce into the
infinity ring (and making the global identifier `infinity` refer to
`SR(infinity)`?) Or, perhaps better, adding an intermediate “symbolic
infinity ring” that would coerce into both `SR` and `InfinityRing`, but
have no ingoing coercions?
That sounds feasible, since SR can have subrings now.
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Ticket URL: <http://trac.sagemath.org/ticket/17777#comment:21>
Sage <http://www.sagemath.org>
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