The algebra of differential operators tangent to a hyperplane arrangement
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🧮 math.AG
math.RA
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arrangementalgebradifferentialhyperplaneoperatorstangentcaldercriterion
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We prove using an extension of Saito's criterion that the algebra of differential operators tangent to a free hyperplane arrangement is generated by the derivations of the arrangement, recovering in this way a result of F. J. Calder\'on-Moreno.
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