Title of Paper :Having the H-space structure is not a generic property
Author(s) : Jianzhong Pan
AMS Classification numbers :55P60,55P45
Addresses of Authors:
Institute of Math.,Academia Sinica ,Beijing 100080 ,China
email:pjz@math03.math.ac.cn
Text of Abstract (try for 20 lines or less) :
In this note, we answer in negative a question posed
by McGibbon about the generic property of H-space structure.
In fact we verify the conjecture of
Roitberg. Incidentally, the same example also answers
in negative the open problem 10 in McGibbon.