A new functional S vanishes precisely on free line arrangements and enables discovery of verified free examples for every admissible exponent pair with up to 20 lines.
Write T(α 1,α 2) =A 1 α1, whereA 1 ∈R Nout×k1 is obtained by contractingTwithα 2
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A semicontinuous relaxation of Saito's criterion and freeness as angular minimization
A new functional S vanishes precisely on free line arrangements and enables discovery of verified free examples for every admissible exponent pair with up to 20 lines.