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R. W. Cottle, “A Theorem of Fritz John in Mathematical Programming,” RAND Memorandum RM-3538-PR, 1963.

has been cited by the following article:

• TITLE: Fritz John Duality in the Presence of Equality and Inequality Constraints

  AUTHORS: Iqbal Husain, Santosh K. Shrivastav

  KEYWORDS: Second-Order Invexity; Second-Order Pseudoinvexity; Second-Order Quasi-Invexity; Nonlinear Programming; Fritz John Type Dual

  JOURNAL NAME: Applied Mathematics, Vol.3 No.9, September 27, 2012

  ABSTRACT: A dual for a nonlinear programming problem in the presence of equality and inequality constraints which represent many realistic situation, is formulated which uses Fritz John optimality conditions instead of the Karush-Kuhn-Tucker optimality conditions and does not require a constraint qualification. Various duality results, namely, weak, strong, strict-converse and converse duality theorems are established under suitable generalized convexity. A generalized Fritz John type dual to the problem is also formulated and usual duality results are proved. In essence, the duality results do not require any regularity condition if the formulations of dual problems uses Fritz John optimality conditions.