Displaying similar documents to “Controlled connectivity of closed 1-forms.”

Parametrized h -cobordism theory

Allen E. Hatcher (1973)

Annales de l'institut Fourier


This paper gives an expository account of the author’s work on the “second” obstruction to deforming a pseudo-isotopy on a smooth compact manifold to an isotopy. Using earlier results on the “first” obstruction, due independently to J.B. Wagoner and the author, this completes the generalization of J. Cerf’s pseudo-isotopy theorem to the non-simply-connected case.