Seminar of the session "Algebraic topology, geometric and combinatorial group theory"
timetable:
Thu 26 Feb, 9:30 - 10:30, Aula Dini
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seminar: "THE nbc MINIMAL COMPLEX OF SUPERSOLVABLE ARRANGEMENTS"Seminar of the session "Algebraic topology, geometric and combinatorial group theory" (2015)
speaker: Simona Settepanella (Department of Mathematics, Hokkaido University, Sapporo)abstract: Bijections between nbc-basis of Orlik Solomom Algebra, chambers and, more recently, minimal complex of a complexified real arrangement have been studied by many authors. In this talk we illustrate a very particular bijiection in the case of supersolvable arrangements. This bijection has a very handy description that tourn out to be useful to study the (co)-homology of the Milnor Fibre for such arrangements and to give a direct description of a bijiection introduced by Barcelo and Goupil, between elements of the symmetric group and nbc-basis of OS Algebra of Braid arrangement.
timetable:
Thu 26 Feb, 9:30 - 10:30, Aula Dini
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