Adv. Math. Econ. Volume 5, pp.55-63 (2003)



Abstract convexity and nonsmooth analysis: Global aspects

Takao Fujimoto1, José A. Silva2 and Antonio Villar3
1 Department of Economic Analysis, University of Alicante, 03071 Alicante, Spain
Department of Economics, Kagawa University, Takamatsu, Kagawa, 760, Japan
2 Department of Economic Analysis, University of Alicante, 03071 Alicante, Spain
3 Department of Economic Analysis, University of Alicante and IVIE, 03071 Alicante, Spain
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Abstract.
Nonlinear extensions of some theorems concerning inverse-positive matrices are made. The method of proof is based on an intuitively natural geometrical consideration.