Mathematica 9 is now available
Services & Resources / Wolfram Forums
-----
 /
MathGroup Archive
1998
*January
*February
*March
*April
*May
*June
*July
*August
*September
*October
*November
*December
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 1998

[Date Index] [Thread Index] [Author Index]

Search the Archive

Ricci version 1.32



                              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 
|
+----------------------------------------------------------------------+




  • Prev by Date: Re: Converting system of equat
  • Next by Date: Celestial Mechanics
  • Prev by thread: Re: Converting system of equat
  • Next by thread: Celestial Mechanics