Hostname: page-component-586b7cd67f-g8jcs Total loading time: 0 Render date: 2024-11-28T03:07:12.092Z Has data issue: false hasContentIssue false

Cohomology of chain recurrent sets

Published online by Cambridge University Press:  19 September 2008

Morris W. Hirsch
Affiliation:
Department of Mathematics, University of California at Berkeley, Berkeley, CA 94720, USA
Charles C. Pugh
Affiliation:
Department of Mathematics, University of California at Berkeley, Berkeley, CA 94720, USA
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Let ϕ be a flow on a compact metric space Λ and let p ∈ Λ be chain recurrent. We show that (Λ; ℝ) ≠ 0 if dimp Λ = 1 or if p belongs to a section of ϕ. Applications to planar flows and to smooth flows are given.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1988

References

REFERENCES

[1].Bowen, R.. ω-limits sets for Axiom A diffeomorphisms. J. Diff. Eq. 18 (1975), 333339.CrossRefGoogle Scholar
[2].Churchill, R. C.. Invariant sets which carry cohomology. J. Diff. Eq. 13 (1973), 523550.CrossRefGoogle Scholar
[3].Conley, C.. Isolated Invariant Sets and the Morse Index. CBMS Regional Conference Ser. in Math., 38 (1978), AMS.CrossRefGoogle Scholar
[4].Conley, C.. Invariant sets which carry a one-form. J. Diff. Eq. 8 (1970), 587594.CrossRefGoogle Scholar
[5].Franke, J. & Selgrade, J.. Abstract ω-limit sets, chain recurrent sets, and basic sets for flows. Proc. Amer. Math. Soc. 60 (1976), 309316.Google Scholar
[6]Hartman, P.. Ordinary Differential Equations. Birkhauser, Boston, 1982.Google Scholar
[7]Hurewicz, W. & Wallman, H.. Dimension Theory. Princeton University Press, 1948.Google Scholar
[8]Hurley, M., Bifurcation and chain recurrence. Ergod. Th. & Dynam. Sys. 3 (1983), 231240.CrossRefGoogle Scholar
[9]Spanier, E.. Algebraic Topology. McGraw Hill, N.Y., 1966.Google Scholar
[10]Vietoris, L.. Über den höhren Zusammenhang kompacter Räume und eine Klasse von zuzammenhangstreuen Abbildungen. Math. Ann. 97 (1927), 454472.CrossRefGoogle Scholar
[11]Whitney, H.. Regular families of curves. Ann. of Math. 34 (1933), 240270.CrossRefGoogle Scholar