Hello, say I have a lattice as in
Q = RootSystem('E8').weight_lattice()
with it's canonical bilinear form. How do I find the vectors $v$ such that $(v,v)=n$ for a positive integer $n$?
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Find sphere points in a lattice
Find sphere points in a lattice
Hello, say I have a lattice as in
Q = RootSystem('E8').weight_lattice()
with it's canonical bilinear form. How do I find the vectors $v$ such that $(v,v)=n$ for a positive integer $n$?$n$?
Edit: it would be even better if there's a way to get the points inside a cone, say the principal chamber in the above example.
