## TEdges - The T-graph of multigraded Hilbert schemes

The Macaulay 2 package TEdges.m2 by Diane Maclagan is
available here.

This requires Macaulay 2, which is available for
free download here.

This package contains algorithms and computations for the paper *The T-graph of a
multigraded Hilbert scheme* by Milena Hering and Diane Maclagan
(`arxiv.1110.1861`).

### Instructions for use:

- Save this file as
` TEdges.m2 ` in a directory from which you can
start Macaulay 2.
- Start Macaulay 2 (type
` M2` at a terminal window, or bring up inside emacs).
- At the M2 prompt (or inside emacs), type
` installPackage "TEdges"`,
and hit return or F11 (depending on whether you use a terminal window or emacs).
- Type
` viewHelp TEdges` and return/F11. This will bring up a browser
window with the documentation.
- The
`How to use this package` page has information about the input
and output formats.
- The key commands are
` ComputeGraph`, and
`writeGraph`. For example ` ComputeGraph(7,2)` will
compute the T-graph for the Hilbert scheme of 7 points in A^2. Look
at their documentation pages for other examples of the input format.
- The
`Examples` menu contains extended examples computed in the
Hering/Maclagan paper.
- The data files for section 5.3 are available here: ideals8pointsin4vars.dat,
edges8pointsin4vars.dat.
- The data files for the table of section 5.4 are available as tar.gz file here.

* Site maintained by Diane Maclagan. Last updated 10/10/11. *