improvements for cosets #4302
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improvements for cosets #4302
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- access defining data via functions not fields - rename `acting_domain` to `acting_group` - improve documentation - `in` for left/right cosets now delegates to a membership test in a group - iterator for left/right cosets now uses a group iterator
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@ThomasBreuer does it resolve those PRs completely? Then you can write |
No. |
lgoettgens
reviewed
Nov 13, 2024
| @@ -147,3 +147,6 @@ Base.@deprecate_binding in_linear_system is_in_linear_system | |||
| @deprecate minimal_generating_set(G::GAPGroup) minimal_size_generating_set(G) | |||
| @deprecate has_minimal_generating_set(G::GAPGroup) has_minimal_size_generating_set(G) | |||
| @deprecate set_minimal_generating_set(G::GAPGroup, v) set_minimal_size_generating_set(G, v) | |||
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| @deprecate acting_domain(C::GroupCoset) acting_group(C) | |||
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Suggested change
| @deprecate acting_domain(C::GroupCoset) acting_group(C) | |
| # deprecated for 1.3 | |
| @deprecate acting_domain(C::GroupCoset) acting_group(C) |
just so we keep this information for the future
Add the type of the *subgroup* as a parameter,
then we can prescribe a better `Base.IteratorSize(::Type{<:GroupCoset})`,
as proposed in oscar-system#4289.
Note that in principle, we could omit the type of the *big group* from the
parameters since it is the `parent_type` of the element type parameter.
(The design of the `GroupCoset` type dates back to the times when
we thought that a group has the same type as its subgroups.
At the time when this idea was given up, I should have changed
`GroupCoset` to take the *subgroup* type as a parameter.)
This was tricky: The error messages were misleading, the problem occurred on a lower level.
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Run tests / test (1.6, short, ubuntu-latest) failed with a segmentation fault, restarted. |
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acting_domaintoacting_groupinfor left/right cosets now delegates to a membership test in a groupaddresses #4283 and #4289