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arxiv: 1009.3622 · v2 · pith:56INAQGWnew · submitted 2010-09-19 · 🧮 math.AT · math.GT· math.RT

The homotopy type of toric arrangements

classification 🧮 math.AT math.GTmath.RT
keywords arrangementtoricdescriptioncomplexhomotopyalgebraicappearingarrangements
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A toric arrangement is a finite set of hypersurfaces in a complex torus, every hypersurface being the kernel of a character. In the present paper we build a CW-complex homotopy equivalent to the arrangement complement, with a combinatorial description similar to that of the well-known Salvetti complex. If the toric arrangement is defined by a Weyl group we also provide an algebraic description, very handy for cohomology computations. In the last part we give a description in terms of tableaux for a toric arrangement appearing in robotics.

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