Ricci version 1.32
- To: mathgroup@smc.vnet.net
- Subject: [mg10279] Ricci version 1.32
- From: John M Lee <lee@math.washington.edu>
- Date: Sat, 3 Jan 1998 05:07:28 -0500
- Organization: University of Washington
New release:
Ricci
A Mathematica package for doing tensor calculations
in differential geometry
Version 1.32
Ricci Version 1.32 is a minor revision of Version 1.2, including
enhancements and bug fixes to allow Ricci to work with Mathematica 3.x.
It does not yet take advantage of the WYSIWIG interface of Mathematica;
for that, you will have to wait for Ricci version 2, which I hope to
release sometime during 1998. Ricci 1.32 will still work with
Mathematica 2.x.
Here are the changes since Version 1.2:
* Fixed a serious bug in the parenthesizing of output expressions under
Mathematica 3.0.
* Slightly revised handling of functions and constants with options such
as Type->Positive or Type->NonNegative, to be more consistent with the
way Mathematica 3.0 tests signs. This should still work correctly with
Mathematica 2.0.
* Corrected the handling of a few names that are now built-in functions
under Mathematica 3.0, but were not under version 2.0. This will
eliminate some annoying error messages.
* Fixed a bug in the insertion of indices into expressions of the form
Del[x,Connection->c].
The easiest way to get Ricci is from the web:
http://www.math.washington.edu/~lee/Ricci/
Alternatively, you can download the Ricci files yourself by anonymous
ftp from ftp.math.washington.edu, in directory pub/Ricci.
If you have any questions, please feel free to contact me.
+----------------------------------------------------------------------+
| John M. Lee, Professor of Mathematics University of Washington
| | lee@math.washington.edu Mathematics Department
| | http://www.math.washington.edu/~lee Box 354350
| | Phone 206-543-1735, Fax 206-543-0397 Seattle, WA 98195-4350
|
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