Homology, Homotopy and Applications

Volume 6 (2004)

Number 1

Inequilogical spaces, directed homology and noncommutative geometry

Pages: 413 – 437

DOI: http://dx.doi.org/10.4310/HHA.2004.v6.n1.a21


Marco Grandis (Dipartimento di Matematica, Università di Genova, Italy)


We introduce a preordered version of D. Scott’s equilogical spaces [29], called inequilogical spaces, as a possible setting for Directed Algebraic Topology. The new structure can also express ‘formal quotients’ of spaces, which are not topological spaces and are of interest in noncommutative geometry, with finer results than the ones obtained with equilogical spaces, in a previous paper.

This setting is compared with other structures which have been recently used for Directed Algebraic Topology: spaces equipped with an order, or a local order, or distinguished paths, or distinguished cubes.


equilogical spaces, cubical sets, singular homology, directed homology, noncommutative C*-algebras

2010 Mathematics Subject Classification

18B30, 46L80, 54A05, 55Nxx, 55U10

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