Sorry for not responding earlier about this. I posted on the GH issue, but
in short, you can use `W.domain().roots()` or passing it the explicit space
that has the roots that you want to use, e.g.,
sage: W = WeylGroup(RootSystem(['G',2]).root_lattice())
sage: list(W)
[
[1 0] [ 1 0] [-1 3] [
If I set the variable SAGE_NUM_THREADS to a number of cores before opening
a sage session (command line or jupyterlab) there is a different behaviour
in 10.5 and in 10.6beta;
parallel computation can be done in 10.5, there is no effect in the beta
version (I do not know when it started to fail).
https://graphclasses.org/ ISGCI released update of their database on 2025-01-31.
Sage has some methods for downloading the database, but I couldn't
make it work from sage.
Manually downloading and unzipping the db works for me.
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