International Journal of Mathematics and Mathematical Sciences (Jan 1990)

On a theorem of H. Hopf

  • Takis Sakkalis

DOI
https://doi.org/10.1155/s0161171290001132
Journal volume & issue
Vol. 13, no. 4
pp. 813 – 816

Abstract

Read online

A simple proof of a theorem of H. Hopf [1], via Morse theory, is given.

Keywords