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math.CO2017
Free arrangements with low exponents
Stefan O. Tohaneanu
In this article we show that any free hyperplane arrangement with exponents 1's and 2's is a supersolvable arrangement. We conjecture that any free arrangement with exponents 1's,…
math.AC2017★ 24 cited
A blowup algebra of hyperplane arrangements
Mehdi Garrousian, Aron Simis, Stefan Tohaneanu
It is shown that the Orlik-Terao algebra is graded isomorphic to the special fiber of the ideal generated by the -fold products of the members of a central arrangement o…