Vector ultrametric spaces and a fixed point theorem for correspondences

نویسندگان

1 Faculty of Mathematics, K.N. Toosi University of Technology, P.O. Box 16315-1618, Tehran, Iran

doi
10.22075/ijnaa.2015.302
چکیده

In this paper, vector ultrametric spaces are introduced and a fixed point theorem is given for correspondences. Our main result generalizes a known theorem in ordinary ultrametric spaces.