【摘要】 设P =(x0 ,x1,… ,xn)是f∈C0 (I)的一个返回轨道 ,υ∈F(f)n[P],P包含k( 1)个关于υ的向心点 .在这些条件下 ,MaiJiehua得到结论 :f有周期为奇数p的周期点 ,其中 1<p (n - 2 ) /k +2 .这篇注记中 ,在同样的条件下 ,用不同的方法得到类似的结论 :f有周期为R的周期点 ,其中 :s是偶数时R =S +1;s是奇数r=0时R=s;s是奇数r 1时R =s+2 (s∈N+ ,r∈Zk -1满足n =sk +r) .更多还原

【Abstract】 Suppose that P=(x 0,x 1,...,x n)is a return trajectory of f∈C 0(I),υ∈F(f)n,and P contains k(1) centripetal points relative to υ. From these conditions,Mai Jiehua concluded that f has periodic point with period odd p,where 1<p(n-2)/k+2; and in this note,a similar result is that f has periodic point with period R,where R=s+1 if s is even;R=s if s is odd and r=0;R=s+2 if s is odd and r1(s∈N +,r∈Z k-1 with n=sk+r),in different way.更多还原