This paper presents necessary and/or sufficient conditions for a continuous map to be monotone, quasimonotone or pseudomonotone. The results are given in terms of approximate Jacobian matrices which reduce to convexificators for a real-valued map. The results extend corresponding results obtained using Clarke generalized Jacobian matrices.

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V. Jeyakumar

Department of Applied Mathematics, University of New South Wales, Sydney 2052, Australia.

D. T. Luc

Institute for Mathematics, Hanoi, Vietnam.

S. Schaible

Graduate School of Management, University of California, Riverside, California, USA

V. Jeyakumar, D. T. Luc, S. Schaible. “Characterizations of Generalized Monotone Nonsmooth Continuous Maps Using Approximate Jacobians.” Journal of Convex Analysis 5 (1998), No. 1, 119–132. https://doi.org/10.68381/jca05-9