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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

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 introduce the diamond-alpha exponential function on time scales. As particular cases, one gets both delta and nabla exponential functions. A method of solution of a homogenous linear dynamic diamond-alpha equation on a regular time scale…

Classical Analysis and ODEs · Mathematics 2009-02-16 Dorota Mozyrska , Delfim F. M. Torres

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 generalize the Hahn variational calculus by studying problems of the calculus of variations with higher-order derivatives. The symmetric quantum calculus is studied, namely the $\alpha,\beta$-symmetric, the $q$-symmetric, and the Hahn…

Classical Analysis and ODEs · Mathematics 2013-06-07 Artur M. C. Brito da Cruz

The objective of this paper is twofold: (i) to survey existing results of generalized polynomials on time scales, covering definitions and properties for both delta and nabla derivatives; (ii) to extend previous results by using the more…

Classical Analysis and ODEs · Mathematics 2008-09-10 Dorota Mozyrska , Delfim F. M. Torres

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

In this paper, we present a time scale version of the Hermite-Hadamard inequality for functions convex on the coordinates via the diamond-$\alpha$ calculus. Our results are new and they generalize and extend a result due to Dragomir.

Dynamical Systems · Mathematics 2017-06-27 Eze R. Nwaeze

We introduce the interval Darboux delta integral (shortly, the $ID$ $\Delta$-integral) and the interval Riemann delta integral (shortly, the $IR$ $\Delta$-integral) for interval-valued functions on time scales. Fundamental properties of…

Classical Analysis and ODEs · Mathematics 2019-07-05 Dafang Zhao , Guoju Ye , Wei Liu , Delfim F. M. Torres

We prove a more general version of the Gruss inequality by using the recent theory of combined dynamic derivatives on time scales and the more general notions of diamond-alpha derivative and integral. For the particular case when alpha = 1,…

Classical Analysis and ODEs · Mathematics 2009-09-18 Moulay Rchid Sidi Ammi , Delfim F. M. Torres

The paper is devoted to study analogues of the van der Corput lemmas involving Mittag-Leffler functions. The generalisation is that we replace the exponential function with the Mittag-Leffler-type function, to study oscillatory integrals…

Functional Analysis · Mathematics 2021-10-05 Michael Ruzhansky , Berikbol T. Torebek

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

We prove Cauchy's formula for repeated integration on time scales. The obtained relation gives rise to new notions of fractional integration and differentiation on arbitrary nonempty closed sets.

Classical Analysis and ODEs · Mathematics 2021-05-20 Delfim F. M. Torres

We introduce more general concepts of Riemann-Liouville fractional integral and derivative on time scales, of a function with respect to another function. Sufficient conditions for existence and uniqueness of solution to an initial value…

Classical Analysis and ODEs · Mathematics 2018-07-24 Kheira Mekhalfi , Delfim F. M. Torres

In this paper we establish a version of the Paley-Wiener theorem of Fourier analysis in the frame of the Mellin transform. We provide two different proofs, one involving complex analysis arguments, namely the Riemann surface of the…

Classical Analysis and ODEs · Mathematics 2015-09-29 Carlo Bardaro , Paul L. Butzer , Ilaria Mantellini , Gerhard Schmeisser

As an efficient mathematical tool, monotonicity rules play an extremely crucial role in the real analysis field. In this paper, we explore some monotonicity rules for quotient of Delta, Nabla and Diamond-Alpha integrals with variable upper…

Classical Analysis and ODEs · Mathematics 2023-12-19 Zhong-Xuan Mao , Xiao-Yue Du , Jing-Feng Tian

This expository and review paper deals with the Diamond Lemma for ring theory, which is proved in the first section of G. M. Bergman, The Diamond Lemma for Ring Theory, Advances in Mathematics, 29 (1978), pp. 178-218. No originality of the…

Representation Theory · Mathematics 2023-09-22 Takao Inoué

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

In this paper, we study analogues of the van der Corput lemmas involving Mittag-Leffler functions. The generalisation is that we replace the exponential function with the Mittag-Leffler-type function, to study oscillatory type integrals…

Functional Analysis · Mathematics 2024-08-26 Michael Ruzhansky , Berikbol T. Torebek

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
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