A note on a theorem on a nonlinear complementarity problem

Abstract

In the paper “A nonlinear complementarity problem for monotone functions”, Bull. Austral. Math. Soc. 20 (1979), 227–231, Nanda and Patel proved that for a monotone function that fixes the origin, the complementarity problem admits a solution. In this note we give a short proof of the same result under weaker assumptions.