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Affine and toric arrangements
2008
Discrete Mathematics & Theoretical Computer Science
International audience We extend the Billera―Ehrenborg―Readdy map between the intersection lattice and face lattice of a central hyperplane arrangement to affine and toric hyperplane arrangements. For toric arrangements, we also generalize Zaslavsky's fundamental results on the number of regions. Nous étendons l'opérateur de Billera―Ehrenborg―Readdy entre le trellis d'intersection et la treillis de faces d'un arrangement hyperplans centraux aux arrangements affines et toriques. Pour les
doi:10.46298/dmtcs.3625
fatcat:b3dppdf3wrhnjllstucvzysb7i