The Gysin sequence for quantum lens spaces
Francesca Arici
Radboud University Nijmegen, NetherlandsSimon Brain
Radboud Universiteit Nijmegen, NetherlandsGiovanni Landi
Università di Trieste, Italy
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Abstract
We define quantum lens spaces as ‘direct sums of line bundles’ and exhibit them as ‘total spaces’ of certain principal bundles over quantum projective spaces. For each of these quantum lens spaces we construct an analogue of the classical Gysin sequence in K-theory. We use the sequence to compute the K-theory of the quantum lens spaces, in particular to give explicit geometric representatives of their K-theory classes. These representatives are interpreted as ‘line bundles’ over quantum lens spaces and generically define ‘torsion classes’. We work out explicit examples of these classes.
Cite this article
Francesca Arici, Simon Brain, Giovanni Landi, The Gysin sequence for quantum lens spaces. J. Noncommut. Geom. 9 (2015), no. 4, pp. 1077–1111
DOI 10.4171/JNCG/216