Zobrazeno 1 - 10
of 148
pro vyhledávání: '"Ferreira, Rui A. C."'
Autor:
Ferreira, Rui A. C., Simon, Thomas
We investigate the log-concavity on the half-line of the Wright function $\phi(-\alpha,\beta,-x),$ in the probabilistic setting $\alpha\in (0,1)$ and $\beta \ge 0.$ Applications are given to the construction of generalized entropies associated to the
Externí odkaz:
http://arxiv.org/abs/2212.07974
Autor:
Ferreira, Rui A. C.1 (AUTHOR), Simon, Thomas2 (AUTHOR) thomas.simon@univ-lille.fr
Publikováno v:
Constructive Approximation. Oct2024, Vol. 60 Issue 2, p309-338. 30p.
Autor:
Ferreira, Rui A. C., Simon, Thomas
We establish some identities in law for the convolution of a beta prime distribution with itself, involving the square root of beta distributions. The proof of these identities relies on transformations on generalized hypergeometric series obtained v
Externí odkaz:
http://arxiv.org/abs/2108.09244
Autor:
Ferreira, Rui A. C.
We define a class of discrete operators that, in particular, include the delta and nabla fractional operators.
Comment: This is the version published in Journal of Fractional Calculus and Nonlinear Systems
Comment: This is the version published in Journal of Fractional Calculus and Nonlinear Systems
Externí odkaz:
http://arxiv.org/abs/2105.03896
Autor:
Ferreira, Rui A. C.
In this work we wish to highlight some consequences of a recent result proved in [N. D. Cong and H. T. Tuan, Generation of nonlocal fractional dynamical systems by fractional differential equations, J. Integral Equations Appl. 29 (2017), no. 4, 585-6
Externí odkaz:
http://arxiv.org/abs/2102.09264
Autor:
Ferreira, Rui A. C.1 (AUTHOR) raferreira@fc.ul.pt
Publikováno v:
Arabian Journal of Mathematics. Apr2024, Vol. 13 Issue 1, p91-101. 11p.
Autor:
Ferreira, Rui A. C.
In this work we argue about the Lesche stability of some systems, that are motivated by the use of fractional derivatives.
Comment: To appear in Journal of Applied Analysis (2022), Vol. 28
Comment: To appear in Journal of Applied Analysis (2022), Vol. 28
Externí odkaz:
http://arxiv.org/abs/2011.02737
Autor:
Ferreira, Rui A. C.
In this work we present a novel proof of the Saalschutz formula by using the theory of discrete fractional calculus. The proofs of some results within this theory, namely, the fractional power rule and the fractional Leibniz rule are revisited.
Externí odkaz:
http://arxiv.org/abs/2008.11605
Legendre's necessary condition for fractional Bolza functionals with mixed initial/final constraints
Autor:
Bourdin, Loïc, Ferreira, Rui A. C.
Publikováno v:
Journal of Optimization Theory and Applications, Springer Verlag, In press
The present work was primarily motivated by our findings in the literature of some flaws within the proof of the second-order Legendre necessary optimality condition for fractional calculus of variations problems. Therefore we were eager to elaborate
Externí odkaz:
http://arxiv.org/abs/2005.05609