Changes between Initial Version and Version 2 of Ticket #28921


Ignore:
Timestamp:
12/29/19 00:25:53 (21 months ago)
Author:
gh-DeRhamSource
Comment:

New commits:

87425aaTrac 28921: Simple checks added for _lmul_

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  • Ticket #28921

    • Property Status changed from new to needs_review
    • Property Authors changed from to Michael Jung
    • Property Cc tscrim egourgoulhon added
    • Property Component changed from PLEASE CHANGE to linear programming
    • Property Branch changed from to u/gh-DeRhamSource/mixed_forms___zero_treatment_for_scalar_multiplication
    • Property Keywords mixed-forms manifolds added
    • Property Commit changed from to 87425aa9ca3a0fddbce658ee9caba85d9650d2c9
    • Property Type changed from PLEASE CHANGE to enhancement
  • Ticket #28921 – Description

    initial v2  
     1Now we have:
     2{{{
     3sage: M = Manifold(2, 'M')
     4sage: X.<x,y> = M.chart()
     5sage: A = M.mixed_form([1,0,0], name='A')
     6sage: 0*A
     7Mixed differential form 0/\A on the 2-dimensional differentiable manifold M
     8}}}
     9
     10Better would be:
     11
     12{{{
     13sage: M = Manifold(2, 'M')
     14sage: X.<x,y> = M.chart()
     15sage: A = M.mixed_form([1,0,0], name='A')
     16sage: 0*A
     17Mixed differential form zero on the 2-dimensional differentiable manifold M
     18sage: (0*A) is M.mixed_form_algebra().zero()
     19True
     20sage: 1*A is A
     21True
     22}}}