Combinatorics Seminar 2017


Speaker: Roman Nedela, Matej Bel University

Date: Tue, Apr 25, 2017

Time: 15:30 - 17:30

Venue: Middle Meeting Room

Title: Graph coverings (1)

Abstract:

Graphs with semiedges and their fundamental groups; Actions of groups on graphs; Highly symmetrical graphs; Subgroup enumeration; Enumeration of conjugacy classes.

Graph coverings and two group actions on a fibre; Voltage spaces, permutation voltage space; Caley voltage space; Coset voltage space; Equivalence of coverings and T-reduced voltage spaces; Enumeration of Coverings.

Slides: View slides


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