Changes between Initial Version and Version 2 of Ticket #9290


Ignore:
Timestamp:
06/21/10 08:07:55 (12 years ago)
Author:
nthiery
Comment:

Legend:

Unmodified
Added
Removed
Modified
  • Ticket #9290 – Description

    initial v2  
     1The root system / coxeter group code is designed from the ground up to allow for this extension.
     2
     3Steps:
     4
     5 - Double check {{{CartanType(["H",3]).coxeter_diagram()}}} and friends
     6
     7 - Given a coxeter diagram, construct the dynkin diagram {{{g}}}
     8   corresponding to the geometric representation; most of the time,
     9   this will involve roots of unity, and require e.g. a cyclotomic
     10   field (see also #8327)
     11
     12 - Make sure that {{{L = RootSystem(g).root_space()}}} accepts such a diagram
     13
     14 - Make sure that {{{WeylGroup(L)}}} accepts such a root space
     15
     16 - Fix all the interfaces to properly reflect the generalization
     17   (e.g. WeylGroup above should really be CoxeterGroup).