#17367: Classes of combinatorial structures
-------------------------------------+-------------------------------------
Reporter: elixyre | Owner:
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-6.5
Component: combinatorics | Resolution:
Keywords: | Merged in:
Authors: Jean-Baptiste | Reviewers:
Priez | Work issues:
Report Upstream: N/A | Commit:
Branch: | 6771a334eac5460c5d193f58f28ea7fbc782189c
u/elixyre/class_of_combinatorial_structures| Stopgaps:
Dependencies: |
-------------------------------------+-------------------------------------
Changes (by elixyre):
* cc: kcrisman, ncohen (removed)
* cc: zabrocki (added)
* status: new => needs_review
Comment:
Ok... this is not really a duplicate... #16465 contains lot of things...
to many... I'm not sure about its destiny! whatever...
This ticket #17367 provides a category of combinatorial classes
`sage.categories.classes_of_combinatorial_structures.py`.
It contains some methods that I need to define a simple design of
(combinatorial) Hopf algebras.
For example, most of the time we define graded connected Hopf algebras
indexed by a "connected" class of combinatorial structure `C`. This means
the unit and the counit MUST be automatically defined by the unique
element of the graded component of degree 0 of `C` (As an user, I don't
want write again and again this same code).
- Problem: In sage, there is no way to ask `C.graded_component(n)`.
This ticket provides to that, it provides those kind of methods. It also
provides some code to easily design a class of combinatorial structures
(`sage.combinat.structures.__init__.py`)
new files:
- `sage.categories.classes_of_combinatorial_structures.py` (the category)
- `sage.categories.examples.classes_of_combinatorial_structures.py` (an
example)
- `sage.combinat.structures.__init__.py` (the design used in the example)
all classes of combinatorial structures modified to use the category:
- `sage.combinat.composition.py`
- `sage.combinat.permutation.py`
- `sage.combinat.binary_trees.py`
--
Ticket URL: <http://trac.sagemath.org/ticket/17367#comment:9>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at http://groups.google.com/group/sage-trac.
For more options, visit https://groups.google.com/d/optout.
