Changes between Initial Version and Version 2 of Ticket #27548


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Timestamp:
03/25/19 20:40:25 (3 years ago)
Author:
egourgoulhon
Comment:

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  • Ticket #27548

    • Property Status changed from new to needs_review
    • Property Cc tscrim added
    • Property Branch changed from to public/manifolds/periodic_coords
    • Property Commit changed from to 1d658e0e3f95a6c8389e7b0b36eea914078bfff8
  • Ticket #27548 – Description

    initial v2  
    11This ticket introduces periodic coordinates on manifolds for more flexibility.
    2 In particular, this fixes an issue with the azimuthal angle phi being limited limited to the interval (0,2*pi). For instance, the numerical computation of a geodesic that is winding around the center in Schwarzschild spacetime fails:
     2In particular, this fixes an issue with the azimuthal angle phi being limited to the interval (0,2*pi). For instance, the numerical computation of a geodesic that is winding around the center in Schwarzschild spacetime fails:
    33{{{
    44sage: M = Manifold(4, 'M', structure='Lorentzian')
     
    2727to allow for the full integration of the geodesic.
    2828
    29 The periodicity of the coordinate is taken into account in the point comparison:
     29The periodicity of the coordinate is taken into account in point comparisons:
    3030{{{
    3131sage: M((0, 8, pi/2, pi)) == M((0, 8, pi/2, 3*pi))