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- Delfim F. M. Torres3 profiles41 · h 65
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- University of CoimbraPT11 papers
- Centre National de la Recherche ScientifiqueFR9 papers
- Institut de Mécanique Céleste et de Calcul des ÉphéméridesFR8 papers
- Institute of Theoretical PhysicsCN8 papers
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Showing 2003Show all
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math.HO2003
Smarandache Sequences: Explorations and Discoveries with a Computer Algebra System
Paulo D. F. Gouveia, Delfim F. M. Torres
We study Smarandache sequences of numbers, and related problems, via a Computer Algebra System. Solutions are discovered, and some conjectures presented.
math.OC2003
A Proper Extension of Noether's Symmetry Theorem for Nonsmooth Extremals of the Calculus of Variations
Delfim F. M. Torres
For nonsmooth Euler-Lagrange extremals, Noether's conservation laws cease to be valid. We show that Emmy Noether's theorem of the calculus of variations is still valid in the wider…
math.OC2003
Integrals of Motion for Discrete-Time Optimal Control Problems
Delfim F. M. Torres
We obtain a discrete time analog of E. Noether's theorem in Optimal Control, asserting that integrals of motion associated to the discrete time Pontryagin Maximum Principle can be…