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akwilson19 edited this page Jul 9, 2019 · 4 revisions

GRTensor III

Oct 1, 2018: GRIII is now compatible with Maple 2018. Fix in version 2.2

  • fix Issue 30
  • fix Issue 31
  • fix Issue 29

Previous Version

Version 2.1.3, April 10, 2017

  • fix Issue 16
  • fix Issue 15

Version 2.1.2, released April 9, 2017

  • fix issue with unassigned nsign object in junction calculations
  • add help for spacetime()
  • convert all junction worksheet examples to use spacetime (no junction metrics required)

Version 2.1.1, released April 2, 2017. Version 2.1 introduces new functionality: spacetime()

  • allows definition of a spacetime with a line-element or metric component parameters as part of the command
  • no longer need to use a metric file and allows worksheets to be self-contained
  • see the worksheets/intros directory for examples

Added some improvements to the grtransform command and created some examples from Carroll (see worksheets/intros)
Added grload() modification to allow grload() with no arguments to open a file browser

Critical bug fix: grdef (see Issue #13)

Fixes for:

  • Issue #10 grtransform co-ordinates
  • Issue #9 missing help text for grt_objects

The worksheets directory has been re-organized and a few new examples created:

  • intros/kerr_killing_tensor
  • junctions/curzon_wormhole

Release 2.00: Add junction and hypersurface capability

Release 1.00: GRTensorIII is a adaptation of GRTensorII version 1.50 developed in 1994-1999. It is primarily a refactoring of internal data representation with some updates to the ”modern” Maple environment

  • move all variables inside a scoped Maple package
  • include all extension objects from GRII (basic etc.) directly in the main package
  • support Maple worksheet dialog based input
  • remove some seldom used commands (grloaddef, grsavedef, grloadobj, grsaveobj)
  • no changes have been made to the expressions used to define the standard tensor objects

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GRTensorIII software and documentation is copyright 1994–2019 by the authors. GRTensorIII software and documentation is provided free of charge and without warranty. The authors retain any and all rights to the software known as GRTensorIII and its documentation. GRTensorIII development has been supported by the Natural Science and Engineering Research Council of Canada and the Advisory Research Committee of Queen’s University. MapleV is a trademark of Waterloo Maple Software.

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