Abstract
Let S^2 be a two-dimensional sphere. We consider two types of its foliations with one singularity and maps f:S^2→S^2 preserving these foliations, more and less regular. We prove that in both cases f has at least |deg(f)| fixed points, where deg(f) is a topological degree of f. In particular, the lower growth rate of the number of fixed points of the iterations of f is at least log|deg(f)|. This confirms the Shub’s conjecture in these classes of maps.
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- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1007/s12346-018-0298-8
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- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
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Qualitative Theory of Dynamical Systems
no. 18,
pages 533 - 546,
ISSN: 1575-5460 - Language:
- English
- Publication year:
- 2019
- Bibliographic description:
- Graff G., Misiurewicz M., Nowak-Przygodzki P.: Periodic Points for Sphere Maps Preserving MonopoleFoliations// Qualitative Theory of Dynamical Systems. -Vol. 18, (2019), s.533-546
- DOI:
- Digital Object Identifier (open in new tab) 10.1007/s12346-018-0298-8
- Sources of funding:
- Verified by:
- Gdańsk University of Technology
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