Results 21 to 30 of about 1,377,441 (267)

Interval oscillation criteria for nonlinear impulsive differential equations with variable delay

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2016
In this paper, the interval qualitative properties of a class of second order nonlinear differential equations are studied. For the hypothesis of delay being variable $\tau(t)$, an "interval delay function" is introduced to estimate the ratio of ...
Xiaoliang Zhou, Wu-Sheng Wang
doaj   +1 more source

On the Liouville Function in Short Intervals [PDF]

open access: yesInternational Mathematics Research Notices, 2021
Abstract Let $\lambda $ denote the Liouville function. Assuming the Riemann Hypothesis, we prove that $\int _X^{2X}\Big |\sum _{x\leq n \leq x+h}\lambda (n) \Big |^2{\textrm{d}} x \ll Xh(\log X)^6,$ as $X\rightarrow \infty $, provided $h=h(X)\leq \exp \left (\sqrt{\left (\frac{1}{2}-o(1)\right )\log X \log \log X}\right ).$ The proof ...
openaire   +2 more sources

A proposed method for solving multiobjective linear fractional programming problems with rough coefficients [PDF]

open access: yesDelta Journal of Science, 2016
In this paper, a new method for solving multiobjective linear fractional programming problems with roughcoefficient (MORLFP) is proposed. The MORLFP problem is considered by incorporating rough intervals in thecoefficients of the objective functions.
Mohamed Muamer, El-saeed Ammar
doaj   +1 more source

Two Interval Upper-Bound Q-Function Approximations with Applications

open access: yesMathematics, 2022
The Gaussian Q-function has considerable applications in numerous areas of science and engineering. However, the fact that a closed-form expression for this function does not exist encourages finding approximations or bounds of the Q-function.
Zoran Perić   +5 more
doaj   +1 more source

On the Extension of Interval Functions [PDF]

open access: yesTransactions of the American Mathematical Society, 1947
Introduction. The problem of extending the range of definition of a function defined on a class of elementary figures-intervals, rectangles-has been treated in various ways in the literature. In the theory of Lebesgue measure a particular function-length of interval (area of rectangle)-is extended in a completely additive way to an additive class of ...
openaire   +1 more source

Harmonically Convex Fuzzy-Interval-Valued Functions and Fuzzy-Interval Riemann–Liouville Fractional Integral Inequalities

open access: yesInternational Journal of Computational Intelligence Systems, 2021
It is well known that the concept of convexity establishes strong relationship with integral inequality for single-valued and interval-valued function.
Gul Sana   +4 more
doaj   +1 more source

Hermite-Hadamard- and Jensen-Type Inequalities for Interval h1,h2 Nonconvex Function

open access: yesJournal of Mathematics, 2020
In the present study, we will introduce the definition of interval h1,h2 nonconvex function. We will investigate some properties of interval h1,h2 nonconvex function.
Hongxin Bai   +4 more
doaj   +1 more source

Width-Based Interval-Valued Distances and Fuzzy Entropies

open access: yesIEEE Access, 2019
In this paper, we study distance measures between interval-valued fuzzy sets and entropies of interval-valued fuzzy sets. These are well-known and widely used notions in the fuzzy sets theory.
Zdenko Takac   +4 more
doaj   +1 more source

Effects of high-intensity interval training program on pituartry function in basketball players: a randomized controlled trial

open access: yesFrontiers in Physiology, 2023
The aim of the study was to determine how the short high-interval training program affects cortisol levels in basketball players. A total of 27 male basketball players volunteered for the study and were randomly assigned to one of two groups: Control ...
Recep Soslu   +6 more
doaj   +1 more source

On the Continuity of Associated Interval Functions

open access: yesReal Analysis Exchange, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Sinha, V., Rana, Inder K.
openaire   +3 more sources

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