Zobrazeno 1 - 10
of 54
pro vyhledávání: '"Abdelouahed Hamdi"'
Publikováno v:
Results in Control and Optimization, Vol 17, Iss , Pp 100486- (2024)
In this article, we study nonconvex multiobjective fractional programming problems involving E-differentiable functions (MFPE). We establish the E-Karush–Kuhn–Tucker (E-KKT) sufficient E-optimality conditions for nonsmooth vector optimization pro
Externí odkaz:
https://doaj.org/article/93e890e6381a4488ac5c3266feb3172a
Publikováno v:
Mathematics and Modeling in Finance, Vol 3, Iss 1, Pp 83-98 (2023)
The use of variance as a risk measure is limited by its non-coherentnature. On the other hand, standard deviation has been demonstrated as acoherent and effective measure of market volatility. This paper suggests theuse of standard deviation in portf
Externí odkaz:
https://doaj.org/article/f2e5ceab7bd041dfbde8875fc3c204d7
Publikováno v:
Journal of Inequalities and Applications, Vol 2023, Iss 1, Pp 1-19 (2023)
Abstract Integral inequalities with generalized convexity play an important role in both applied and theoretical mathematics. The theory of integral inequalities is currently one of the most rapidly developing areas of mathematics due to its wide ran
Externí odkaz:
https://doaj.org/article/3a6cca4e6c6a4fe38714ca1c8f4c2a83
Publikováno v:
Mathematics, Vol 12, Iss 7, p 1008 (2024)
In this paper, we examine a semi-infinite interval-valued optimization problem with vanishing constraints (SIVOPVC) that lacks differentiability and involves constraints that tend to vanish. We give definitions of generalized convex functions along w
Externí odkaz:
https://doaj.org/article/0b173b72be7346a998469fa308c202ef
Publikováno v:
Journal of Inequalities and Applications, Vol 2021, Iss 1, Pp 1-15 (2021)
Abstract In this paper, we introduce ( h 1 , h 2 ) $(h_{1},h_{2})$ -preinvex interval-valued function and establish the Hermite–Hadamard inequality for preinvex interval-valued functions by using interval-valued Riemann–Liouville fractional integ
Externí odkaz:
https://doaj.org/article/ad986f1307ef4f8aadaab401f22c12db
Publikováno v:
Boundary Value Problems, Vol 2019, Iss 1, Pp 1-20 (2019)
Abstract The existence of positive solutions is established for boundary value problems defined within generalized Riemann–Liouville and Caputo fractional operators. Our approach is based on utilizing the technique of fixed point theorems. For the
Externí odkaz:
https://doaj.org/article/b80efb0cd322438aa0dae26b4d9f3b5a
Publikováno v:
Mathematics, Vol 10, Iss 15, p 2808 (2022)
Investors always pay attention to the two factors of return and risk in portfolio optimization. There are different metrics for the calculation of the risk factor, among which the most important one is the Conditional Value at Risk (CVaR). On the oth
Externí odkaz:
https://doaj.org/article/6942bf2f753c4052b102bb7699869d54
Publikováno v:
International Journal of Computational Intelligence Systems, Vol 14, Iss 1 (2020)
In the last two decades, evolutionary computing has become the mainstream to attract the attention of the experts in both academia and industrial applications due to the advent of the fast computer with multi-core GHz processors have had a capacity o
Externí odkaz:
https://doaj.org/article/80b79122a5634793b1cf3a1c59824a16
Publikováno v:
Mathematics, Vol 9, Iss 15, p 1800 (2021)
The modified Totient function of Carmichael λ(.) is revisited, where important properties have been highlighted. Particularly, an iterative scheme is given for calculating the λ(.) function. A comparison between the Euler φ and the reduced totient
Externí odkaz:
https://doaj.org/article/d7244911977547b7ad09911f75c5b8ed
Publikováno v:
Symmetry, Vol 12, Iss 8, p 1369 (2020)
In this paper, we study the problem of minimizing a general quadratic function subject to a quadratic inequality constraint with a fixed number of additional linear inequality constraints. Under a regularity condition, we first introduce two convex q
Externí odkaz:
https://doaj.org/article/0b0c90d70dc643409695e82055ef04db