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- Delfim F. M. Torres4 profiles59 · h 65
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- A. Correia3 profiles11 · h 34
- J. Veloso2 profiles10 · h 41
- J. Laskar3 profiles9 · h 71
- A. Breskin8 · h 50
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- M. Ostilli2 profiles8 · h 11
- R. Chechik8 · h 45
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- S. Dorogovtsev8 · h 46
- Xin-Jian Xu8 · h 20
- University of CoimbraPT15 papers
- Centre National de la Recherche ScientifiqueFR14 papers
- Bialystok University of TechnologyPL10 papers
- Institut de Mécanique Céleste et de Calcul des ÉphéméridesFR10 papers
- Sorbonne UniversitéFR9 papers
- Institute of Theoretical PhysicsCN8 papers
- Lanzhou UniversityCN8 papers
- Physico-Technical InstituteRU8 papers
- Weizmann Institute of ScienceIL8 papers
- Polytechnic Institute of BragançaPT6 papers
- Universidade do PortoPT5 papers
- Observatoire de ParisFR4 papers
6 papers · 2 filters
Isoperimetric problems on time scales with nabla derivatives
Ricardo Almeida, Delfim F. M. Torres
We prove a necessary optimality condition for isoperimetric problems under nabla-differentiable curves. As a consequence, the recent results of [M.R. Caputo, A unified view of oste…
The isoperimetric problem for Holderian curves
Ricardo Almeida, Delfim F. M. Torres
We prove a necessary stationary condition for non-differentiable isoperimetric variational problems with scale derivatives, defined on the class of Hölder continuous functions.
Calculus of Variations on Time Scales with Nabla Derivatives
Natalia Martins, Delfim F. M. Torres
We prove a necessary optimality condition of Euler-Lagrange type for variational problems on time scales involving nabla derivatives of higher-order. The proof is done using a new…
The problem of the body of revolution of minimal resistance
Alexander Plakhov, Alena Aleksenko
Newton's problem of the body of minimal aerodynamic resistance is traditionally stated in the class of {\it convex} axially symmetric bodies with fixed length and width. We state a…
Necessary Optimality Condition for a Discrete Dead Oil Isotherm Optimal Control Problem
Moulay Rchid Sidi Ammi, Delfim F. M. Torres
We obtain necessary optimality conditions for a semi-discretized optimal control problem for the classical system of nonlinear partial differential equations modelling the water-oi…
Necessary and sufficient conditions for local Pareto optimality on time scales
Agnieszka B. Malinowska, Delfim F. M. Torres
We study a multiobjective variational problem on time scales. For this problem, necessary and sufficient conditions for weak local Pareto optimality are given. We also prove a nece…