Changes between Initial Version and Version 2 of Ticket #20973


Ignore:
Timestamp:
07/07/16 10:43:53 (3 years ago)
Author:
andrew.mathas
Comment:

New commits:

c52edd1Basic functionality for Aoo
257b283Minimal implementation of Cartan type Aoo

Legend:

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  • Ticket #20973

    • Property Authors changed from to Andrew Mathas
    • Property Component changed from PLEASE CHANGE to combinatorics
    • Property Branch changed from to u/andrew.mathas/cartan_type_aoo
    • Property Keywords Cartan type A infinity added
    • Property Commit changed from to 257b283a7b30fc46cc5bae0bbfcd12037e56eb62
    • Property Type changed from PLEASE CHANGE to enhancement
  • Ticket #20973 – Description

    initial v2  
     1Gives a minimal implementation of the `A_oo` Cartan type:
     2{{{#!sage
     3sage: CartanType(['A',oo])
     4['A', oo]
     5sage: CartanType(['A',oo]).is_irreducible()
     6True
     7sage: CartanType(['A',oo]).is_simply_laced()
     8True
     9sage: print(CartanType(['A', oo]).ascii_art())
     10...---O---O---O---O---O---O---O---...
     11     -3  -2  -1   0   1   2   3
     12}}}
     13
     14In addition, the ficket fixes the following error:
     15{{{#!sage
     16sage: CartanType(['A',-1])
     17  File "<string>", line unknown
     18
     19    ^
     20SyntaxError: unexpected EOF while parsing
     21}}}
     22
     23See related discussion on [https://groups.google.com/forum/#!topic/sage-combinat-devel/tnQngybmlI4 sage-combinat].