POSITIVE SOLUTIONS FOR A CLASS OF N TH-ORDER M-POINT SINGULAR BOUNDARY VALUE PROBLEM
一类n-阶m-点奇异边值问题的正解

In this paper, by using Krasnosel'skill fixed point theorem,the existence result of positive solutions is established for the following $n$th-order $m$-point singularboundary value problem:$$\left\{\aligned& u^{(n)}(t)+h(t)f(t,u(t),u'(t),\cdots,u^{(n-2)}(t))=0,\ \ 0