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We prove dynamic inequalities of majorisation type for functions on time scales. The results are obtained using the notion of Riemann-Stieltjes delta integral and give a generalization of [App. Math. Let. 22 (2009), no. 3, 416--421] to time…

Classical Analysis and ODEs · Mathematics 2012-11-05 Dorota Mozyrska , Ewa Pawluszewicz , Delfim F. M. Torres

The theory of the calculus of variations was recently extended to the more general time scales setting, both for delta and nabla integrals. The primary purpose of this paper is to further extend the theory on time scales, by establishing…

Classical Analysis and ODEs · Mathematics 2008-09-10 Rui A. C. Ferreira , Moulay Rchid Sidi Ammi , Delfim F. M. Torres

We establish some linear and nonlinear integral inequalities of Gronwall-Bellman-Bihari type for functions with two independent variables on general time scales. The results are illustrated with examples, obtained by fixing the time scales…

Classical Analysis and ODEs · Mathematics 2009-03-06 Rui A. C. Ferreira , Delfim F. M. Torres

In this paper, we formulate and prove Wendroff's inequalities on time scales. Next, we deduct some of Pachpatte's inequalities.

General Mathematics · Mathematics 2020-03-12 Svetlin G. Georgiev , Goverdan Khadekar , Praveen Kumar

The theory and applications of dynamic derivatives on time scales has recently received considerable attention. The primary purpose of this paper is to give basic properties of diamond-$\alpha$ derivatives which are a linear combination of…

Classical Analysis and ODEs · Mathematics 2008-08-27 Moulay Rchid Sidi Ammi , Rui A. C. Ferreira , Delfim F. M. Torres

We introduce and investigate the Henstock-Kurzweil (HK) integral for Riesz-space-valued functions on time scales. Some basic properties of the HK delta integral for Riesz-space-valued functions are proved. Further, we prove uniform and…

Classical Analysis and ODEs · Mathematics 2017-05-15 Xuexiao You , Dafang Zhao , Delfim F. M. Torres

In this paper we obtain some weighted generalizations of Ostrowski type inequalities on time scales involving combination of weighted {\Delta}-integral means, i.e., a weighted Ostrowski type inequality on time scales involving combination…

Functional Analysis · Mathematics 2012-07-19 Wenjun Liu , Hüseyin Rüzgar , Adnan Tuna

In the theory of time scales, given $\mathbb{T}$ a time scale with at least two distinct elements, an integration theory is developed using ideas already well known as Riemann sums. Another, more daring, approach is to treat an integration…

Classical Analysis and ODEs · Mathematics 2024-07-12 Patrick Oliveira

We study diamond-alpha integrals on time scales. A diamond-alpha version of Fermat's theorem for stationary points is also proved, as well as Rolle's, Lagrange's, and Cauchy's mean value theorems on time scales.

Classical Analysis and ODEs · Mathematics 2009-08-14 Agnieszka B. Malinowska , Delfim F. M. Torres

In the paper we prove several inequalities involving two isotonic linear functionals. We consider inequalities for functions with variable bounds, for Lipschitz and H\" older type functions etc. These results give us an elegant method for…

Functional Analysis · Mathematics 2016-12-02 Mea Bombardelli , Ludmila Nikolova , Sanja Varošanec

We define a more general type of integral on time scales. The new diamond integral is a refined version of the diamond-alpha integral introduced in 2006 by Sheng et al. A mean value theorem for the diamond integral is proved, as well as…

Classical Analysis and ODEs · Mathematics 2015-09-11 Artur M. C. Brito da Cruz , Natalia Martins , Delfim F. M. Torres

Let $\Delta(x)$ denote the error term in the Dirichlet divisor problem, and let $E(T)$ denote the error term in the asymptotic formula for the mean square of $|\zeta(1/2+it)|$. If $E^*(t) := E(t) - 2\pi\Delta^*(t/(2\pi))$ with $\Delta^*(x)…

Number Theory · Mathematics 2013-05-10 Aleksandar Ivić

We introduce and investigate the concept of harmonical $h$-convexity for interval-valued functions. Under this new concept, we prove some new Hermite-Hadamard type inequalities for the interval Riemann integral.

General Mathematics · Mathematics 2020-02-10 Dafang Zhao , Tianqing An , Guoju Ye , Delfim F. M. Torres

We establish some nonlinear integral inequalities for functions defined on a time scale. The results extend some previous Gronwall and Bihari type inequalities on time scales. Some examples of time scales for which our results can be…

Classical Analysis and ODEs · Mathematics 2009-06-11 Rui A. C. Ferreira , Delfim F. M. Torres

In this paper we develop a theory of integration for locally band preserving functions, introduced by Ercan and Wickstead, on Dedekind complete $f$-algebras. Specifically, we construct Darboux and Riemann integrals and show that they are…

Functional Analysis · Mathematics 2026-05-01 Eder Kikianty , Luan Naude , Mark Roelands , Christopher Schwanke

Let $d(n)$ be the number of divisors of $n$, let $$ \Delta(x) := \sum_{n\le x}d(n) - x(\log x + 2\gamma -1) $$ denote the error term in the classical Dirichlet divisor problem, and let $\zeta(s)$ denote the Riemann zeta-function. Several…

Number Theory · Mathematics 2016-11-16 Aleksandar Ivić

We prove a two dimensional Holder and reverse-Holder inequality on time scales via the diamond-alpha integral. Other integral inequalities are established as well, which have as corollaries some recent proved Hardy-type inequalities on time…

Classical Analysis and ODEs · Mathematics 2010-03-16 Moulay Rchid Sidi Ammi , Delfim F. M. Torres

We study the process of integration on time scales in the sense of Riemann-Stieltjes. Analogues of the classical properties are proved for a generic time scale, and examples are given.

Classical Analysis and ODEs · Mathematics 2010-03-26 Dorota Mozyrska , Ewa Pawluszewicz , Delfim F. M. Torres

In this paper we first extend a generalization of Ostrowski type inequality on time scales for functions whose derivatives are bounded and then unify corresponding continuous and discrete versions. We also point out some particular integral…

General Mathematics · Mathematics 2011-04-05 Wenjun Liu , Quoc Anh Ngo , Wenbin Chen

This paper presents a systematic study of the calculus of interval-valued functions and its application to interval differential equations. To this end, first, we introduce new interval arithmetic operations. Under new operations, the space…

General Mathematics · Mathematics 2025-12-01 Wei Liu , Muhammad Aamir Ali , Yanrong An
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