#14914: Stuffle algebra
-------------------------------------+-------------------------------------
       Reporter:  deneufchatel       |         Owner:  Matthieu
           Type:  enhancement        |  Deneufchâtel
       Priority:  minor              |        Status:  new
      Component:  combinatorics      |     Milestone:
       Keywords:                     |    Resolution:
        Authors:  Matthieu           |     Merged in:
  Deneufchâtel                       |     Reviewers:
Report Upstream:  N/A                |   Work issues:
         Branch:                     |  Dependencies:
       Stopgaps:                     |
-------------------------------------+-------------------------------------

Old description:

> The stuffle (or quasi shuffle) algebra with counit and coproduct.

New description:

 The stuffle (or quasi shuffle) algebra with counit and coproduct.

 Apply:

 - [attachment:stuffle.patch]
 - [attachment:trac_14914_stuffle_addon1_fc.patch]

--

Comment (by chapoton):

 here is a first review patch, cleaning up and making sure that all tests
 pass

 (check using sage -bt stuffle_algebra.py)

 some somments:

 TAB characters are forbidden in python, you should use 4 spaces. More
 generally one should avoid whitespaces at the end of the lines (trailing
 whitespaces) (check your text editor configuration)

 the examples section should look like that:
 {{{
 EXAMPLES::

     sage: 2+2
     4
 }}}
 namely, with a shift of 4 spaces

 If you want to work further on this ticket now, you should rather use a
 third patch on top of the two existing ones.

--
Ticket URL: <http://trac.sagemath.org/ticket/14914#comment:1>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica, 
and MATLAB

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