摘要
Let M be a manifold. If there exists a positive integer m, such that （i） for any homeomorphism g on M, at least one of the iterates g, g2,…, gm has a fixed point;（ⅱ） there exists a homeomorphism f on M such that f, f2, …, fm-1 are all fixed-point-free, then, we say, the free degree of homeomorphisms on M is m. If such
