Hey Christian,
I'm split on checking data, on one hand, it's good for the obvious
reasons, however I don't like the performance hit it can have when creating
many such elements. Here, I think `to_word()` should work with the 0's (or
any filling which we can make an alphabet for that matter).
What is the typo?
On Tuesday, February 4, 2014 6:07:14 PM UTC-8, Vít Tuček wrote:
>
> There is a typo at
> http://sporadic.stanford.edu/thematic_tutorials/lie/weyl_groups.html
>
> We may ask when this permutation is trivial. If it is nontrivial it
> induces an automorphism of the Dynkin diagram,
