Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Eugenia Grecu"'
Autor:
Loredana Ciurdariu, Eugenia Grecu
Publikováno v:
Axioms, Vol 13, Iss 6, p 413 (2024)
In this study, an integral identity is given in order to present some Hermite–Hadamard–Mercer-type inequalities for functions whose powers of the absolute values of the third derivatives are convex. Several consequences and three applications to
Externí odkaz:
https://doaj.org/article/8657ee1d9c6c4a6e8624fa24ec2bffa4
Autor:
Loredana Ciurdariu, Eugenia Grecu
Publikováno v:
Fractal and Fractional, Vol 8, Iss 1, p 12 (2023)
The purpose of the paper is to present new q-parametrized Hermite–Hadamard-like type integral inequalities for functions whose third quantum derivatives in absolute values are s-convex and (α,m)-convex, respectively. Two new q-integral identities
Externí odkaz:
https://doaj.org/article/81a1f2af012d473f8500fe0d5b563301
Autor:
Loredana Ciurdariu, Eugenia Grecu
Publikováno v:
Symmetry, Vol 15, Iss 8, p 1514 (2023)
The main goal of this work is to provide quantum parametrized Hermite-Hadamard like type integral inequalities for functions whose second quantum derivatives in absolute values follow different type of convexities. A new quantum integral identity is
Externí odkaz:
https://doaj.org/article/b7d8a62d2ca14878ba78fc9452c5517a
Autor:
Loredana Ciurdariu, Eugenia Grecu
Publikováno v:
Fractal and Fractional, Vol 7, Iss 6, p 463 (2023)
The aim of this study was to present several improved quantum Hermite–Hadamard-type integral inequalities for convex functions using a parameter. Thus, a new quantum identity is proven to be used as the main tool in the proof of our results. Conseq
Externí odkaz:
https://doaj.org/article/2b0d1176613549c0bcecfadca075f8cc
Publikováno v:
Mathematics, Vol 11, Iss 5, p 1171 (2023)
We test the interaction between governments’ COVID-19 interventions, COVID-19-induced uncertainty, and the volatility of sovereign bonds. Different from previous literature, we investigate the asymmetric response of bond market volatility to both g
Externí odkaz:
https://doaj.org/article/31346b2bdcb249e0ae13cc08d853b19e
Autor:
Loredana Ciurdariu, Eugenia Grecu
Publikováno v:
Symmetry, Vol 15, Iss 1, p 246 (2023)
A new (p,q)-integral identity involving left and right post quantum derivatives, by using three times (p,q)-differentiable functions is established and then this identity is used to derive several new post-quantum Ostrowski type integral inequalities
Externí odkaz:
https://doaj.org/article/22cceff66e734727988553de426d1574
Publikováno v:
Mathematics, Vol 10, Iss 20, p 3782 (2022)
The non-degenerate Chenciner bifurcation of a discrete dynamical system is studied using a transformation of parameters which must be regular at the origin of the parameters (the condition CH.1 of the well-known treatise of Kuznetsov). The article st
Externí odkaz:
https://doaj.org/article/eafa7619e89c43399904be243a1a4e45
Publikováno v:
Mathematics, Vol 10, Iss 9, p 1603 (2022)
Chenciner bifurcation appears for some two-dimensional systems with discrete time having two independent variables. Investigated here is a special case of degeneration where the implicit function theorem cannot be used around the origin, so a new app
Externí odkaz:
https://doaj.org/article/fab08b773d5d4e70bc3c7fcc3e1678da
Publikováno v:
Symmetry, Vol 14, Iss 1, p 77 (2022)
A new transformation of parameters for generic discrete-time dynamical systems with two independent parameters is defined, for when the degeneracy occurs. Here the classical transformation of parameters (α1,α2)→(β1,β2) is not longer regular at
Externí odkaz:
https://doaj.org/article/23b1fe2b4a7246b6a17858e7831750fc
Publikováno v:
Energies, Vol 14, Iss 9, p 2394 (2021)
This paper analyzes the impact of the COVID-19 pandemic on economic growth and electricity consumption and investigates the hypothesis of the influence of this consumption on the gross domestic product (GDP) for Romania. Using time series on monthly
Externí odkaz:
https://doaj.org/article/6fb367c3e34c4e74a2d0d9fa70fe3a28