When a smooth self-map of a semi-simple Lie group can realize the least number of periodic points
There are two algebraic lower bounds of the number of n-periodic points of a self-map f : M →4 M of a compact smooth manifold of dimension at least 3: NFn(f) = min{#Fix(gn);g - f; g continuous} and NJDn(f) = min{#Fix(gn);g - f; g smooth}. In general, NJDn(f) may be much greater than NFn(f). We show...
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Veröffentlicht in: | Science China. Mathematics 2017-09, Vol.60 (9), p.1579-1590 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | There are two algebraic lower bounds of the number of n-periodic points of a self-map f : M →4 M of a compact smooth manifold of dimension at least 3: NFn(f) = min{#Fix(gn);g - f; g continuous} and NJDn(f) = min{#Fix(gn);g - f; g smooth}. In general, NJDn(f) may be much greater than NFn(f). We show that for a self-map of a semi-simple Lie group, inducing the identity fundamental group homomorphism, the equality NFn(f) = NJDn(f) holds for all n →← all eigenvalues of a quotient cohomology homomorphism induced by f have moduli ≤ 1. |
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ISSN: | 1674-7283 1869-1862 |
DOI: | 10.1007/s11425-016-9099-9 |