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Complexes of t-colorable graphs
Linköping University, The Institute of Technology. Linköping University, Department of Mathematics, Applied Mathematics.
Department of Mathematics, University of Miami, Coral Gables, FL 33124-4250, United States, Department of Mathematics, Washington University, St. Louis, MO 63130, United States.
2003 (English)In: SIAM Journal on Discrete Mathematics, ISSN 0895-4801, E-ISSN 1095-7146, Vol. 16, no 3, p. 371-389Article in journal (Refereed) Published
Abstract [en]

We study the simplicial complex of t-colorable graphs on n vertices. We prove this complex is homotopy equivalent to a wedge of spheres all of dimension n(t - 1) - (2t) - 1 when t = 2 and when t = n - 3. We show that such a homotopy equivalence does not hold for general t and n.

Place, publisher, year, edition, pages
2003. Vol. 16, no 3, p. 371-389
Keywords [en]
Chromatic number, Discrete Morse theory, Monotone graph property
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-46692DOI: 10.1137/S0895480100366968OAI: oai:DiVA.org:liu-46692DiVA, id: diva2:267588
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2017-12-13

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Linusson, Svante

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