摘要
The existence of positive solutions to second-order Neumann BVPs -u' + Mu = f(t, u), u'(0) = u'(1) = 0 and u' + Mu = f(t, u), u'(0) =u'(1) is proved by a simple application of a Fixed Point Theorem in cones due to Krasnoselskii[1,6].
本文利用锥不动点定理证明了－ｕ”＋Ｍｕ＝ｆ（ｔ，ｕ），ｕ’（０）＝ｕ’（１）＝０和ｕ”＋Ｍｕ＝ ｆ（ｔ，ｕ），ｕ’（０）＝ｕ’（１）＝ ０两个二阶微分方程 Ｎｅｕｍａｎｎ边值问题正解的存在性。
