CoCalc -- Varchenko-Matrix.sagews

This states a slight programmation error with varchenko_matrix(). One gets namely a 3x3-matrix instead of a 7x7-matrix.

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License: GPL3
ubuntu2204

H.<x,y> = HyperplaneArrangements(QQ)
g = y | x-y | x+y+1
g.varchenko_matrix()

[    1    h1 h1*h2]
[   h1     1    h2]
[h1*h2    h2     1]