#11410: 01 sequence or east-north sequence for partitions
---------------------------------------+------------------------------------
       Reporter:  pdehaye              |         Owner:  sage-combinat          
                           
           Type:  enhancement          |        Status:  needs_review           
                           
       Priority:  minor                |     Milestone:  sage-5.8               
                           
      Component:  combinatorics        |    Resolution:                         
                           
       Keywords:  partition            |   Work issues:                         
                           
Report Upstream:  N/A                  |     Reviewers:  Frédéric Chapoton, 
Nathann Cohen, Travis Scrimshaw
        Authors:  Paul-Olivier Dehaye  |     Merged in:                         
                           
   Dependencies:  #13605               |      Stopgaps:                         
                           
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Changes (by tscrim):

 * cc: sage-combinat (added)
  * reviewer:  Frédéric Chapoton, Nathann Cohen => Frédéric Chapoton,
               Nathann Cohen, Travis Scrimshaw


Old description:

> Adds a method to the partition class that returns the 01 sequence of the
> partition (the sequence of north or east steps taken along the boundary
> of the partition). Since this is really an biinfinite sequence starting
> with 0000000 and ending with 11111111, this should return a a finite list
> of 0s and 1s, starting for any (non-empty) partition with a 1 and ending
> with a 0.
>
> Apply [attachment:trac_11410-zero_one_sequence_partitions-pod.v2.patch]

New description:

 Adds a method to the partition class that returns the 01 sequence of the
 partition (the sequence of north or east steps taken along the boundary of
 the partition). Since this is really an biinfinite sequence starting with
 0000000 and ending with 11111111, this should return a a finite list of 0s
 and 1s, starting for any (non-empty) partition with a 1 and ending with a
 0.

 Apply:

 - [attachment:trac_11410-zero_one_sequence_partitions-pod.v2.patch]
 - [attachment:trac_11410-zero_one_sequence_partitions-review-ts.patch]

--

Comment:

 Hey Frederic,

 I've uploaded a review patch which adds some more info to the
 documentation. Everything else looks good to me. If you agree with my
 changes, you can set this to positive review.

 Thanks,[[BR]]
 Travis

-- 
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11410#comment:18>
Sage <http://www.sagemath.org>
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