Critical groups of graphs with reflective symmetry

  • Authors:
  • Andrew Berget

  • Affiliations:
  • Department of Mathematics, University of Washington, Seattle, US

  • Venue:
  • Journal of Algebraic Combinatorics: An International Journal
  • Year:
  • 2014

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Abstract

The critical group of a graph is a finite Abelian group whose order is the number of spanning forests of the graph. For a graph G with a certain reflective symmetry, we generalize a result of Ciucu---Yan---Zhang factorizing the spanning tree number of G by interpreting this as a result about the critical group of G. Our result takes the form of an exact sequence, and explicit connections to bicycle spaces are made.