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University of Sydney Algebra Seminar

Gus Lehrer

Friday 4 November, 12-1pm, Place: Carslaw 173

Milnor fibre cohomology and the non-crossing poset

I shall present some new (co)chain complexes from which the (co)homology of the Milnor fibre F of a hyperplane arrangement may be computed. These complexes are based on a model of Brady et al, who use the Non-Crossing-Partition lattice to give a CW-complex decomposition of F. This problem is interlinked with many classical mathematical problems. This is joint work (in progress) with Yang Zhang.