Dear Forum, dear Nicola Sottocornola,
[...] A and S are 4x4 matrices over Cyclotomics
exceeded the permitted memory (`-o' command line option) at
The problem here is the wrong use of the function `Group'. Type
to read the manual section for this function.
When it is called as for your group K the second argument is interpreted as
the identity of the group (the first argument is a list of generators).
Since S is not the identity matrix, GAP created a nonsense object here and
runs into an error when you ask for `Size(K);'. We will think about putting
a check of the input into the code in future GAP releases.
What you actually wanted to tell GAP was:
# Now you just give one list of generators
I hope this helps,
/// Dr. Frank Lübeck, Lehrstuhl D für Mathematik, Templergraben 64, /// \\\ 52062 Aachen, Germany \\\ /// E-mail: Frank.Luebeck@Math.RWTH-Aachen.De /// \\\ WWW: http://www.math.rwth-aachen.de/~Frank.Luebeck/ \\\