关于（M）－型映射及其和的满射性的几个结果

Some Results on the Surjectivity of Mappings of Type(M)and Their Sum

本文给出了在非强制条件下（Ｍ）－型映射及其和的满射性的几个结果，推广和改进了Ｂｒｏｗｄｅｒ ａｎｄＨｅｓｓ￣［２］和Ｇｕｐｔａ￣［３］中的某些结果。

In this paper the author gives some results on the surjectivity of mappingsof type(M)and their sum without coevcive conditions,which improve and generalize someresults of Browder and Hess[2]and Gupta [3]in several ways.