Theory and Application of Integral Inequalities, 2nd Edition

A special issue of Axioms (ISSN 2075-1680). This special issue belongs to the section "Mathematical Analysis".

Deadline for manuscript submissions: 31 August 2025 | Viewed by 491

Special Issue Editor


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Guest Editor
Department of Mathematics, Politehnica University of Timisoara, 300006 Timisoara, Romania
Interests: convex functions; mathematical inequalities; dynamical systems; operator theory
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Special Issue Information

Dear Colleagues,

Integral inequalities have become increasingly important in the fields of pure mathematics and applied mathematics, garnering more interest from researchers now than in the previous decades. Integral inequalities are closely related to the concept of convexity. The aim of this Special Issue is to expand on the inequalities derived within the framework of q-calculus, fractional calculus, and their generalizations and to identify new types of integral inequalities for various types of convexities. This will contribute to a better understanding and unification of these recently developed theories. The theory of variational inequalities is closely related to convex analysis. The optimality conditions for differentiable convex functions are characterized by variational inequalities. Integral inequalities, particularly Jensen’s inequality, play a crucial role in optimization and information theory, statistics, cryptography,y and many other areas of research. The applications of integral inequalities in operator theory and matrix inequalities are also of significant interest in various areas of pure mathematics. The Guest Editors aim to provide a platform to present the latest advances in various aspects of the theory of integral inequalities and recently developed applications.  

Dr. Loredana Ciurdariu
Guest Editor

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Keywords

  • generalized convexity
  • q-calculus
  • fractional calculus
  • variational inequalities
  • interval-valued inequalities
  • Jensen inequality
  • applications in information theory and statistics
  • inequalities related to functions
  • applications of inequalities in operator theory
  • matrix inequality

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Published Papers (2 papers)

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Research

13 pages, 257 KiB  
Article
Investigating the Hyers–Ulam Stability of the Generalized Drygas Functional Equation: New Results and Methods
by Gang Lyu, Yang Liu, Yuanfeng Jin and Yingxiu Jiang
Axioms 2025, 14(4), 315; https://doi.org/10.3390/axioms14040315 - 21 Apr 2025
Viewed by 155
Abstract
In this paper, we explore the Hyers–Ulam stability of a generalized Drygas functional equation, which extends the classical Drygas equation by incorporating additional parameters and conditions. Our investigation focuses on mappings from a real vector space into a Banach space and employs the [...] Read more.
In this paper, we explore the Hyers–Ulam stability of a generalized Drygas functional equation, which extends the classical Drygas equation by incorporating additional parameters and conditions. Our investigation focuses on mappings from a real vector space into a Banach space and employs the fixed-point method to establish stability criteria. Our findings provide new insights into the conditions under which the generalized Drygas equation maintains stability, contributing to the broader understanding of functional equations in mathematical analysis. The results have implications for the study of functional equations and their applications in various mathematical contexts. Full article
(This article belongs to the Special Issue Theory and Application of Integral Inequalities, 2nd Edition)
12 pages, 236 KiB  
Article
Spatial Decay Estimates for the Moore–Gibson–Thompson Heat Equation Based on an Integral Differential Inequality
by Naiqiao Qing, Jincheng Shi and Yunfeng Wen
Axioms 2025, 14(4), 265; https://doi.org/10.3390/axioms14040265 - 1 Apr 2025
Viewed by 149
Abstract
The present work investigates the spatial evolution characteristics of solutions to the Moore–Gibson–Thompson heat equation within a three-dimensional cylindrical geometry. By constructing an integral-differential inequality framework, we establish rigorous estimates demonstrating the exponential spatial decay of the solution as the axial distance from [...] Read more.
The present work investigates the spatial evolution characteristics of solutions to the Moore–Gibson–Thompson heat equation within a three-dimensional cylindrical geometry. By constructing an integral-differential inequality framework, we establish rigorous estimates demonstrating the exponential spatial decay of the solution as the axial distance from the inlet boundary increases without bound. This finding aligns with a generalized interpretation of the Saint-Venant principle, demonstrating its applicability under the present asymptotic conditions. The integral-differential inequality method proposed in this paper can also be used for the study of the Saint-Venant principle for other equations. Full article
(This article belongs to the Special Issue Theory and Application of Integral Inequalities, 2nd Edition)
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