Counterexamples to the Seifert conjecture.

Kuperberg, Krystyna

Displaying similar documents to “Counterexamples to the Seifert conjecture.”

On global hypoellipticity of vector fields

Jorge Hounie (1982)

Journées équations aux dérivées partielles

Similarity:

Some examples of nonsingular Morse-Smale vector fields on $S^{3}$

F. Wesley Wilson Jr (1977)

Annales de l'institut Fourier

Similarity:

One wonders or not whether it is possible to determine the homotopy class of a vector field by examining some algebraic invariants associated with its qualitative behavior. In this paper, we investigate the algebraic invariants which are usually associated with the periodic solutions of non-singular Morse-Smale vector fields on the 3-sphere. We exhibit some examples for which there appears to be no correlation between the algebraic invariants of the periodic solutions and the homotopy...