Themistocles M. Rassias

Themistocles M. Rassias is affiliated with the National Technical University of Athens in Greece. Their research spans across several fields, predominantly within Mathematics and Computer Science, with a particular focus on Applied Mathematics and Computational Theory and Mathematics. Their work extends into subfields such as Numerical Analysis, Algebra and Number Theory, and Geometry and Topology.

Their main topics of research include:

• Functional Equations Stability Results
• Optimization and Variational Analysis
• Advanced Topics in Algebra
• Advanced Optimization Algorithms Research
• Fixed Point Theorems Analysis
• Mathematical Inequalities and Applications
• Mathematical functions and polynomials

Recent publications authored or coauthored by Rassias cover a range of topics primarily centered on optimization and variational inequalities. Examples include:

• Explicit extragradient-like method with adaptive stepsizes for pseudomonotone variational inequalities, 2021, Optimization Letters
• An inertial Popov's method for solving pseudomonotone variational inequalities, 2020, Optimization Letters
• A projection and contraction method with adaptive step sizes for solving bilevel pseudo-monotone variational inequality problems, 2020, Optimization
• Existence, Uniqueness and the Multi-Stability Results for a W-Hilfer Fractional Differential Equation, 2023, Axioms
• Special functions and multi-stability of the Jensen type random operator equation in $C^{*}$-algebras via fixed point, 2023, Journal of Inequalities and Applications

Frequent co-authors collaborating with Rassias include:

• Qiao-Li Dong
• Pãnos M. Pardalos
• Reza Saadati
• Choonkil Park
• Yeol Je Cho

Rassias has contributed to numerous publication venues with multiple works published particularly in:

• Series on computers and operations research
• Journal of Inequalities and Applications
• arXiv (Cornell University)
• Optimization Letters
• Axioms

Their book publications show involvement with several academic publishers, namely Springer International Publishing, World Scientific, and Springer Nature. Titles published under these include:

• Approximation and Computation in Science and Engineering (Springer International Publishing, 2022)
• Advances in Matrix Inequalities (Springer International Publishing, 2021)
• Mathematical Analysis in Interdisciplinary Research (Springer International Publishing, 2021)
• Nonlinear Analysis, Differential Equations, and Applications (Springer International Publishing, 2021)
• Nonlinear Analysis and Global Optimization (Springer International Publishing, 2021)
• Computational Mathematics and Variational Analysis (Springer International Publishing, 2020)
• Analysis, Geometry, Nonlinear Optimization and Applications (World Scientific, 2022)
• Mathematical Analysis, Differential Equations and Applications (World Scientific, 2022)
• Mathematical Analysis, Optimization, Approximation and Applications (World Scientific, 2024)
• Global Optimization, Computation, Approximation and Applications (World Scientific, 2024)
• Mathematical Analysis, Optimization and Data Sciences (World Scientific, 2025)
• The Krasnosel'skiĭ-Mann Iterative Method (Springer Nature, 2022)