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We introduce a more general discrete fractional operator, given by convex linear combination of the delta and nabla fractional sums. Fundamental properties of the new fractional operator are proved. As particular cases, results on delta and…

Classical Analysis and ODEs · Mathematics 2010-09-21 Nuno R. O. Bastos , Delfim F. M. Torres

We Investigate two types of dual identities for Caputo fractional differences. The first type relates nabla and delta type fractional sums and differences. The second type represented by the Q-operator relates left and right fractional sums…

Dynamical Systems · Mathematics 2013-01-11 Thabet Abdeljawad

A discrete version of the symmetric duality of Caputo-Torres, to relate left and right Riemann-Liouville and Caputo fractional differences, is considered. As a corollary, we provide an evidence to the fact that in case of right fractional…

Classical Analysis and ODEs · Mathematics 2017-06-16 Thabet Abdeljawad , Delfim F. M. Torres

We define a class of discrete operators that, in particular, include the delta and nabla fractional operators.

Classical Analysis and ODEs · Mathematics 2021-06-30 Rui A. C. Ferreira

Here we define a Caputo like discrete nabla fractional difference and we produce discrete nabla fractional Taylor formulae for the first time. We estimate their remaiders. Then we derive related discrete nabla fractional Opial, Ostrowski,…

Classical Analysis and ODEs · Mathematics 2009-11-18 George A. Anastassiou

We formulate a new class of fractional difference and sum operators, study their fundamental properties, and find their discrete Laplace transforms. The method depends on iterating the fractional sum operators corresponding to fractional…

Classical Analysis and ODEs · Mathematics 2019-01-25 Thabet Abdeljawad , Arran Fernandez

In fractional calculus there are two approaches to obtain fractional derivatives. The first approach is by iterating the integral and then defining a fractional order by using Cauchy formula to obtain Riemann fractional integrals and…

Dynamical Systems · Mathematics 2012-10-02 Thabet Abdeljawad , Dumitru Baleanu , Fahd Jarad , Ravi Agarwal

After reviewing the definition of two differential operators which have been recently introduced by Caputo and Fabrizio and, separately, by Atangana and Baleanu, we present an argument for which these two integro-differential operators can…

Classical Analysis and ODEs · Mathematics 2018-04-25 Andrea Giusti

We Investigate two types of dual identities for Riemann fractional sums and differences. The first type relates nabla and delta type fractional sums and differences. The second type represented by the Q-operator relates left and right…

Dynamical Systems · Mathematics 2013-01-10 Thabet Abdeljawad

In this paper we present a new type of fractional operator, which is a generalization of the Caputo and Caputo--Hadamard fractional derivative operators. We study some properties of the operator, namely we prove that it is the inverse…

Classical Analysis and ODEs · Mathematics 2017-05-30 Ricardo Almeida

In this paper, we introduce the nabla fractional derivative and fractional integral on time scales in the Riemann-Liouville sense. We also introduce the nabla fractional derivative in Gr\"unwald-Letnikov sense. Some of the basic properties…

General Mathematics · Mathematics 2021-12-28 Bikash Gogoi , Utpal Kumar Saha , Bipan Hazarika , Delfim F. M. Torres , Hijaz Ahmad

In this study, we define discrete fractional Sturm-Liouville (DFSL) operators within Riemann-Liouville and Gr\"unwald-Letnikov fractional operators with both delta and nabla operators. We show selfadjointness of the DFSL operator for the…

Spectral Theory · Mathematics 2017-05-12 Erdal Bas , Ramazan Ozarslan

We introduce a nabla, a delta, and a symmetric fractional calculus on arbitrary nonempty closed subsets of the real numbers. These fractional calculi provide a study of differentiation and integration of noninteger order on discrete,…

Classical Analysis and ODEs · Mathematics 2015-12-31 Nadia Benkhettou , Artur M. C. Brito da Cruz , Delfim F. M. Torres

This paper focuses on the fractional difference of Lyapunov functions related to Riemann-Liouville, Caputo and Grunwald-Letnikov definitions. A new way of building Lyapunov functions is introduced and then five inequalities are derived for…

Dynamical Systems · Mathematics 2022-12-07 Yiheng Wei , Yuquan Chen , Tianyu Liu , Yong Wang

The nabla fractional derivative, which was introduced by Gogoi et.al., generalized the ordinary derivative with non-integer order, and unifies the continuous and discrete analysis using backward operator. In this study, we proposed a…

Classical Analysis and ODEs · Mathematics 2025-01-16 Gaddiel L. Dorado , Mark Allien D. Roble

We generalize the classical mean value theorem of differential calculus by allowing the use of a Caputo-type fractional derivative instead of the commonly used first-order derivative. Similarly, we generalize the classical mean value…

Classical Analysis and ODEs · Mathematics 2018-01-29 Kai Diethelm

Recently, some authors have proved monotonicity results for delta and nabla fractional differences separately. In this article, we use dual identities relating delta and nabla fractional difference operators to prove shortly the…

Dynamical Systems · Mathematics 2016-01-22 Thabet Abdeljawad , Baahaaeldin Abdalla

There are several approaches to the fractional differential operator. Generalized q-fractional difference operator was defined in the aid of q-iterated Cauchy integral and q-calculus techniques. We introduce Caputo type derivative related…

General Mathematics · Mathematics 2020-01-30 M. Momenzadeh , S. Norouzpoor

In this paper, we first provide a short summary of the main properties of the so-called general fractional derivatives with the Sonin kernels introduced so far. These are integro-differential operators defined as compositions of the first…

Classical Analysis and ODEs · Mathematics 2022-08-03 Yuri Luchko

Here we define a Caputo like discrete fractional difference and we compare it to the earlier defined Riemann-Liouville fractional discrete analog. Then we produce discrete fractional Taylor formulae for the first time, and we estimate their…

Classical Analysis and ODEs · Mathematics 2009-11-18 George A. Anastassiou
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