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Homology theory formulas for generalized Riemann-Hurwitz and generalized monoidal transformations by Glazebrook, James F.; Verjovsky, Alberto is a scholarly article available to read on EtoBox.

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In the context of orientable circuits and subcomplexes of these as representing certain singular spaces, we consider characteristic class formulas generalizing those classical results as seen for the Riemann-Hurwitz formula for regulating the topology of branched covering maps and that for monoidal transformations which include the standard blowing-up process. Here the results are presented as cap product pairings, which will be elements of a suitable homology theory, rather than characteristic numbers as would be the case when taking Kronecker products once Poincar\'e duality is defined. We further consider possible applications and examples including branched covering maps, singular varieties involving virtual tangent bundles, the Chern-Schwartz-MacPherson class, the homology L-class, generalized signature, and the cohomology signature class.

Author

Glazebrook, James F.; Verjovsky, Alberto

Published

2017

Language

EN