On the topology of nested set complexes
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- by Eva Maria Feichtner and Irene Müller PDF
- Proc. Amer. Math. Soc. 133 (2005), 999-1006 Request permission
Abstract:
Nested set complexes appear as the combinatorial core of De Concini-Procesi arrangement models. We show that nested set complexes are homotopy equivalent to the order complexes of the underlying meet-semilattices without their minimal elements. For atomic semilattices, we consider the realization of nested set complexes by simplicial fans proposed by the first author and Yuzvinsky and we strengthen our previous result showing that in this case nested set complexes in fact are homeomorphic to the mentioned order complexes.References
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Additional Information
- Eva Maria Feichtner
- Affiliation: Department of Mathematics, ETH Zurich, 8092 Zurich, Switzerland
- Email: feichtne@math.ethz.ch
- Irene Müller
- Affiliation: Department of Mathematics, ETH Zurich, 8092 Zurich, Switzerland
- Email: irene@math.ethz.ch
- Received by editor(s): December 12, 2003
- Published electronically: November 19, 2004
- Additional Notes: The second author was supported by ETH research grant TH-10/02-3.
- Communicated by: Paul Goerss
- © Copyright 2004 American Mathematical Society
- Journal: Proc. Amer. Math. Soc. 133 (2005), 999-1006
- MSC (2000): Primary 06A11; Secondary 05E25, 32S45, 57N80
- DOI: https://doi.org/10.1090/S0002-9939-04-07731-7
- MathSciNet review: 2117200