RISC Combinatorics Seminar: Talk Announcement
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Speaker: Prof. Lily Yen
Capilano University and Simon Fraser University

Title of talk: A bijection for switching all crossing and nesting numbers
for a subclass of matchings, set partitions, and permutations.

Time and location: Thursday, July 19, 1.30 p.m.; RISC Seminarroom, Hagenberg.

Abstract:
For a subclass of matchings, set partitions, and  permutations, we
describe a direct bijection involving only arc annotated diagrams that not
only interchanges maximum nesting and crossing numbers, but also all
refinements of crossing and nesting numbers.
Furthermore, we show that the bijection cannot be extended to a larger
class of arc annotated diagrams.