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dc.contributor.authorDuval, Art M.
dc.contributor.authorKlivans, Caroline J.
dc.contributor.authorMartin, Jeremy L.
dc.date.accessioned2010-05-12T15:26:18Z
dc.date.available2010-05-12T15:26:18Z
dc.date.issued2009
dc.identifier.citationSimplicial matrix-tree theorems (with Art M. Duval and Caroline J. Klivans), Transactions of the American Mathematical Society 361 (2009), no. 11, 6073--6114.
dc.identifier.urihttp://hdl.handle.net/1808/6201
dc.descriptionFirst published in Transactions of the American Mathematical Society in volume 361 (2009), no. 11, 6073--6114, published by the American Mathematical Society
dc.description.abstractWe generalize the definition and enumeration of spanning trees from the setting of graphs to that of arbitrary-dimensional simplicial complexes Δ, extending an idea due to G. Kalai. We prove a simplicial version of the Matrix-Tree Theorem that counts simplicial spanning trees, weighted by the squares of the orders of their top-dimensional integral homology groups, in terms of the Laplacian matrix of Δ. As in the graphic case, one can obtain a more finely weighted generating function for simplicial spanning trees by assigning an indeterminate to each vertex of Δ and replacing the entries of the Laplacian with Laurent monomials. When Δ is a shifted complex, we give a combinatorial interpretation of the eigenvalues of its weighted Laplacian and prove that they determine its set of faces uniquely, generalizing known results about threshold graphs and unweighted Laplacian eigenvalues of shifted complexes.
dc.language.isoen_US
dc.publisherAmerican Mathematical Society
dc.relation.isversionofhttp://www.ams.org/journals/tran/2009-361-11/S0002-9947-09-04898-3/S0002-9947-09-04898-3.pdf
dc.relation.hasversionhttp://arxiv.org/pdf/0802.2576
dc.titleSimplicial matrix-tree theorems
dc.typeArticle
kusw.kuauthorMartin, Jeremy L.
kusw.kudepartmentMathematics
kusw.oastatusfullparticipation
kusw.oaversionScholarly/refereed, publisher version
kusw.oapolicyThis item meets KU Open Access policy criteria.
dc.rights.accessrightsopenAccess


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