#7145: Interval exchange transformations
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Reporter: vdelecroix | Owner: vdelecroix
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-4.3
Component: combinatorics | Keywords:
Work_issues: | Author: Vincent Delecroix
Upstream: N/A | Reviewer:
Merged: |
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Comment(by slabbe):
I submitted before preview. So I repeat below the lists that I messed up
above.
For constructor.py, I suggest to
- Create a class constructor containing the functions `PermutationsIET`,
`PermutationIET`, `PermutationLI`, `GeneralizedPermutation`,
`RauzyDiagram`, `IntervalExchangeTransformation`.
- Create the object `IET` = `constructor()`
- Rename `PermutationsIET` to `PermutationsIET_iterator`
- Add a function named `IntervalExchangeTransformation` to the class
constructor that wrapped the constructor of IET in `iet.py`.
- Do we want `AbelianStratum`, `QuadraticStratum` and `AbelianStrata` to
be wrapped in constructor as well? I don't know, but if it is realated to
everything in iet folder, then it would clearly help the user to know
about it.
For iet.py
- Rename `IntervalExchangeTransformation.__mul__` to something like
`multiply_lengths`.
- Keep `IntervalExchangeTransformation.__mul__` for multiplication of two
IET.
- Change `IntervalExchangeTransformation._repr_` to look more like an
`IET` and less as two tuples. For example it could say Interval exchange
transformation from [0, 1[ to [0, 1[ of permutation ?.
- Rename `IntervalExchangeTransformation.copy` as `__copy__` or
`__deepcopy__` if it corresponds to what you want. This may applies to
many other classes in the files.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7145#comment:4>
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