These programs are written in python, released under the GNU General Public Licence and are designed to be run from a GNU/Linux or Mac OS X command line.

### Lie algebra (co)homology for supergroups

Lie algebra code (tar.gz compressed archive) is a collection of object-oriented python programs for calculating Lie algebra (co)homology for supergroups, in particular of the form `psl(n|n)`

. For `psl(2|2)`

(co)homology is explored for the trivial, adjoint and several discrete series atypical representations (notation and results collected in psu112.pdf). For general `psl(n|n)`

the trivial and singleton (for `n`

even) representations are implemented (notation and results collected in pslnn.pdf).

### Cut-and-join operators

Cut-and-join code eases the calculations in
**Cut-and-join operators and N=4 super
Yang-Mills** using the
SAGE computer algebra system.

### Schur-Weyl duality multiplicity

SAGE multiplicity code computes the various
multiplicities used in **Diagonal free field matrix correlators,
global symmetries and giant
gravitons** using the
SAGE computer algebra system.

### Correlators in U(2) sector of N=4

correlator computes tree- and one-loop correlators in the U(2) scalar sector of N=4 supersymmetric Yang-Mills.

### arXiv script

arXiv script is a command line utility for downloading information and files from the arXiv.

### SPIRES script

SPIRES script is a command line utility for downloading references from SPIRES.