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

Views: 23
License: GPL3
Image: 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]