#18565: sequences in SageMath
-------------------------------------+-------------------------------------
Reporter: dkrenn | Owner:
Type: enhancement | Status: new
Priority: major | Milestone: sage-6.8
Component: combinatorics | Resolution:
Keywords: | Merged in:
Authors: Daniel Krenn | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/dkrenn/sequences/base | fa5c40a727f7149fee86e893fc52f27455622929
Dependencies: #19896 | Stopgaps:
-------------------------------------+-------------------------------------
Changes (by dkrenn):
* dependencies: => #19896
Old description:
> similar to
> {{{
> graphs.some_graph
> }}}
> or to
> {{{
> codes.some_code
> }}}
> (and similar), I propose to introduce
> {{{
> sequences.some_sequence
> }}}
> which should provide a unified access point to all possible sequences in
> !SageMath. For example, there is {{{fibonacci_sequence}}} in
> {{{sage.combinat.combinat}}}, {{{binary_recurring_sequence}}} (somewhere
> in combinat) and various other code.
>
> One motivation for creating this, is to include here many sequences,
> which can be calculated term-by-term (from the previously calculated
> ones, i.e., recursively) or where the first N terms can be calculated at
> once efficiently.
> Nevertheless, it can also provide an interface to sequences, where each
> term can be calculated explicitly (without dealing with the previous
> ones).
>
> See the discussion on [[https://groups.google.com/forum/#!topic/sage-
> devel/L-wSCu4fXe8|sage-devel]]
New description:
similar to
{{{
graphs.some_graph
}}}
or to
{{{
codes.some_code
}}}
(and similar), I propose to introduce
{{{
sequences.some_sequence
}}}
which should provide a unified access point to all possible sequences in
!SageMath. For example, there is {{{fibonacci_sequence}}} in
{{{sage.combinat.combinat}}}, {{{binary_recurring_sequence}}} (somewhere
in combinat) and various other code.
This will use homogenous sequences (#19896), which them-self use lazy
lists.
See also the meta-ticket #16107.
---
Old: See the discussion on [[https://groups.google.com/forum/#!topic/sage-
devel/L-wSCu4fXe8|sage-devel]]
--
--
Ticket URL: <http://trac.sagemath.org/ticket/18565#comment:12>
Sage <http://www.sagemath.org>
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and MATLAB
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