Maple scripts to compute the degree of the loci of 4folds of degree d
in P5 containing 2 planes, cf.
Hypersurfaces containing
unexpected subvarieties
2planes4Bottmws2.tar.gz; (contains 3 files); uncompress in the same folder and type in a terminal (linux)
maple 2planes4bottmws2 > 2planes4bottmws2.out&
This builds on the original script for Maple found in P. Meurer,
The number of rational quartics on Calabi-Yau hypersurfaces in
weighted projective space P(2,1^4), Math. Scandin, 78, 63-83 1996, alg-geom/9409001; with contributions by André Meireles (UFPE).
Works fine with maple9.
The script will eventually migrate to macaulay2.
It's also in Singular; two flavors:
gmfestsing.tar.gz,
2planes4Bottnsing.tar.gz.
The latter uses pre-computed data and runs faster.
