[GAP Forum] toric, a new GAP package

[Gerhard Hiss]

Dear Members of the GAP Forum,

It is a pleasure to announce the new GAP package 

		`toric'

by David Joyner.

In the authors words: "toric is a package that implements some computations 
related to toric varieties and combinatorial geometry in GAP. With toric, affine 
toric varieties can be created and related information about them can be 
calculated."

The affine toric varieties are constructed from cones and there are several 
commands dealing with cones and related objects. There are also commands
which compute topological invariants, e.g., Euler characteristics of certain 
non-afffine toric varieties constructed from collections of cones.

toric can be obtained from one of the the web pages

  http://cadigweb.ew.usna.edu/%7Ewdj/gap/toric/

or

  http://www.gap-system.org/Packages/toric.html

Questions concerning the package or its installation should be 
addressed to David Joyner (wdj at usna.edu).


Gerhard Hiss
October 11, 2005


--
Gerhard Hiss, Lehrstuhl D fuer Mathematik, RWTH Aachen, 52056 Aachen
Tel.: (+49) (0) 241 / 80-94543