Morse theory for C*-algebras: a geometric interpretation of some noncommutative manifolds
DOI:
https://doi.org/10.4995/agt.2011.1650Keywords:
C*-algebra, Critical points, CW complexes, Homotopy equivalence, Homotopy type, Morse function, Noncommutative CW complex, Poset, Pseudo-homotopy type, *-representation, Simplicial complexAbstract
The approach we present is a modification of the Morse theory for unital C*-algebras. We provide tools for the geometric interpretation of noncommutative CW complexes. Some examples are given to illustrate these geometric information. The main object of this work is a classification of unital C*-algebras by noncommutative CW complexes and the modified Morse functions on them.Downloads
References
A. Connes, Noncommutative Geometry, Academic Press, 1994.
J. Cuntz, Noncommutative Simplicial Complexes and the Baum-Connes Conjecture, arxiv: math/0103219.
J. Cuntz, Quantum spaces and their noncommutative topology, Notices Am. Math. Soc. 48, no. 8 (2001), 793-799.
D. N. Diep, The structure of C*-Algebras of type I, Vestn. Mosk. Univ., Ser. I, no. 2 (1978), 81-87.
J. Dixmier, Les C*-Algèbres et Leurs Représentations, Gauthier-Villars, (1969).
A. Duval, A combinatorial decomposition of simplicial complexes, Isr. J. Math. 87 (1994), 77-87. https://doi.org/10.1007/BF02772984
S. Eilers, T. A. Loring and G. K. Pedersen, Stability of anticommutation relations: an application to NCCW complexes, J. Reine Angew Math. 499 (1998), 101-143. https://doi.org/10.1515/crll.1998.055
J. M. G. Fell and R. S. Doran, Representations of *-Algebras, Locally Compact Groups and Banach *-Algebraic Bundles, Academic Press, 1988.
R. Forman, Morse theory for cell complexes, Adv. in math. 134 (1998). https://doi.org/10.1006/aima.1997.1650
R. Forman, Witten-Morse theory for cell complexes, Topology 37 (1998), 945-979. https://doi.org/10.1016/S0040-9383(97)00071-2
J. M. Gracia-Bondia, J. C. Varilly and H. Figueroa, Elements of Noncommutative Geometry, Birkhauser, 2001. https://doi.org/10.1007/978-1-4612-0005-5
A. Hatcher, Algebraic Topology, Cambridge Univ. Press, 2002.
G. Landi, An Introduction to Noncommutative Spaces and Their Geometry, arXiv:hepth/9701078.
J. Milnor, Morse Theory, Annals of Math. Studies, Princeton Univ. Press, (1963).
G. K. Pedersen, Pullback and pushout constructions in C*-algebras, J. Funct. Anal. 167 (1999), 243-344. https://doi.org/10.1006/jfan.1999.3456
Downloads
How to Cite
Issue
Section
License
This journal is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike- 4.0 International License.