Topological applications of graded Frobenius $n$-homomorphisms
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D. V. Gugnin
Translated by: Alex Martsinkovsky - Trans. Moscow Math. Soc. 2011, 97-142
- DOI: https://doi.org/10.1090/S0077-1554-2012-00191-5
- Published electronically: January 12, 2012
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Abstract:
This paper generalizes the theory of Frobenius $n$-homomorphisms, as expounded by V. M. Buchstaber and E. G. Rees, to graded algebras, and applies the new algebraic technique of graded Frobenius $n$-homomorphisms to two topological problems. The first problem is to find estimates on the cohomological length of the base and of the total space of a wide class of branched coverings of topological spaces, called the Smith–Dold branched coverings. This class of branched coverings contains, in particular, unbranched finite-sheeted coverings and the usual finite-sheeted branched coverings from the theory of smooth manifolds. The second problem concerns a description of cohomology and fundamental groups of $n$-valued topological groups. The main tool there is a generalization of the notion of a graded Hopf algebra, based on the notion of a graded Frobenius $n$-homomorphism.References
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Bibliographic Information
- D. V. Gugnin
- Affiliation: Mechanics and Mathematics Department, Moscow State University, Moscow 11991, Russia
- Email: dmitry-gugnin@yandex.ru
- Published electronically: January 12, 2012
- Additional Notes: Supported by the RFFI grants 10-01-92102-YaF-a and 11-01-00694-a, President’s Grant for leading scientific schools, Project NSh-5413.2010.1, and the Government Grant 2010-220-01-077, Contract 11.G34.31.0005.
- © Copyright 2012 American Mathematical Society
- Journal: Trans. Moscow Math. Soc. 2011, 97-142
- MSC (2010): Primary 17A42; Secondary 57M12
- DOI: https://doi.org/10.1090/S0077-1554-2012-00191-5
- MathSciNet review: 3184814