Mittagsseminar (in cooperation with A. Steger, D. Steurer and B. Sudakov)

Date and Time: Wednesday, June 22, 2005, 12:15 pm

Duration: This information is not available in the database

Location: This information is not available in the database

Speaker: Patrick Müller

General lexicographic shellability

A lexicographic shellable complex has the homotopy type of a wedge of spheres and this simplicity of topological structure induces bases for homology and cohomology. EC-shellability is a generalization of EL-shellability and it can be shown that EC-shellability is the most general tool to prove shellability. We introduce the concept of shellability of a poset and its corresponding chain complex. We compare some different lexicographic labelings of the edges in a Hasse diagram.

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