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The Supporting Role of the Mangasarian-Fromovitz Constraint Qualification in Calculus of Variations

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Abstract

The Mangasarian-Fromovitz constraint qualification has played a fundamental role in mathematical programming problems involving inequality constraints. It is known to be equivalent to a normality condition (in terms of the positive linear independence of active gradients) which, in turn, implies regularity (the tangent and the linearizing cones coincide), a condition which has been crucial in the derivation of first- and second-order necessary optimality conditions. In this paper, we study the corresponding implications for problems in the calculus of variations. In particular, we show how the equivalence between normality and the Mangasarian-Fromovitz constraint qualification is preserved, but also that their main role changes completely since, as a simple example shows, they may not imply the corresponding regularity condition.

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Acknowledgements

The first author is grateful to CONACYT for the support. The second author is grateful to DGAPA, from Universidad Nacional Autónoma de México, for the support given as part of the PASPA program during a sabbatical stay at the Department of Mathematical Sciences, University of Bath, UK.

Funding

The first author received financial support from CONACYT and the second author from DGAPA-UNAM.

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Authors and Affiliations

  1. Faculdade de Engenharia da Universidade do Porto, SYSTEC - Departamento de Engenharia Electrotécnica e Computadores, Rua Dr Roberto Frias s/n, 4200-465, Porto, Portugal

    Karla L. Cortez

  2. IIMAS, Universidad Nacional Autónoma de México, Apartado Postal 20-126, CDMX 01000, Ciudad de México, México

    Javier F. Rosenblueth

Authors
  1. Karla L. Cortez
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  2. Javier F. Rosenblueth
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Correspondence to Javier F. Rosenblueth.

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Cortez, K.L., Rosenblueth, J.F. The Supporting Role of the Mangasarian-Fromovitz Constraint Qualification in Calculus of Variations. J Dyn Control Syst 28, 493–504 (2022). https://doi.org/10.1007/s10883-021-09534-5

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  • DOI: https://doi.org/10.1007/s10883-021-09534-5

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