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Zbl 1239.49025
Girejko, Ewa; Malinowska, Agnieszka B.; Torres, Delfim F.M.
The contingent epiderivative and the calculus of variations on time scales. (English)
[J] Optimization 61, No. 1-3, 251-264 (2012). ISSN 0233-1934; ISSN 1029-4945/e

Summary: The calculus of variations on time scales is considered. We propose a new approach to the subject that consists of applying a differentiation tool called the contingent epiderivative. It is shown that the contingent epiderivative applied to the calculus of variations on time scales is very useful: it allows to unify the delta and nabla approaches previously considered in the literature. Generalized versions of the Euler-Lagrange necessary optimality conditions are obtained, both for the basic problem of the calculus of variations and isoperimetric problems. As particular cases one gets the recent delta and nabla results.

MSC 2000:: *49K05 Free problems in one independent variable (nec./ suff.)
26E70
34N05

Keywords: contingent derivative; contingent epiderivative; calculus of variations; Euler-Lagrange equations; time scales; delta and nabla calculi

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