#18529: Topological manifolds: basics
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Reporter: egourgoulhon | Owner: egourgoulhon
Type: enhancement | Status: needs_info
Priority: major | Milestone: sage-6.10
Component: geometry | Resolution:
Keywords: topological | Merged in:
manifolds | Reviewers: Travis Scrimshaw
Authors: Eric Gourgoulhon, | Work issues:
Travis Scrimshaw | Commit:
Report Upstream: N/A | 0fb39df7fafe7f0a765bf73b3f34a6cb41e65c40
Branch: | Stopgaps:
u/tscrim/top_manifolds_refactor |
Dependencies: #18175 |
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Comment (by egourgoulhon):
Replying to [comment:77 tscrim]:
>
> This breaks pickling:
Yes but by "handling of the cache" I had in mind not a call to
`_clear_cache_` but rather adding a
unique tag to the constructor, such as the time tag that you already
suggested. In this way, pickling would work. But I agree that this is a
trick and that manifolds do not have a unique (mathematical)
representation. However, given that in general we cannot decide whether
two given manifolds are equal (isomorphic), making each of them unique
with some tag could be an idea... What would be the drawbacks?
--
Ticket URL: <http://trac.sagemath.org/ticket/18529#comment:78>
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