László Tóth – författare

This book summarizes the latest findings in critical infrastructure protection and related research areas. Armed conflicts and wars are now closer to Europe than at any time in the last several decades, and the protection of critical infrastructures has gained new prominence. This situation has also revealed the vulnerability of critical infrastructure and the importance of its protection.The development of technologies, cybertechnologies, and digitalization in all aspects of our daily lives implies new security challenges in critical infrastructure protection and security science and this book addresses the four main dimensions of critical infrastructure protection:1. Physical protection2. Cybersecurity3. Political security4. Individual securityThe issue of physical security has accompanied humanity since its birth. Nowadays, this issue has become even more important due to technological advances, as this is the security area that people physically experience—physical protection, including protection against explosions and ballistic attacks, but also defense of objects and guaranteeing transportation security.Cyberspace represents the fifth domain of warfare and a central security question in our age. The base of cyberspace defense is high-quality hardware and expert support. With our lives increasingly digital, cybersecurity's core elements include safety awareness and informatics.Political security, the third dimension, is shaped by diverse political ideologies influencing economies, societies, and other aspects of life. This book explores topics such as migration policies, defense against terrorism, national and international security, and public safety.The fourth dimension, individual security, spans healthcare, food safety, energy supplies, and economic security. Each chapter of this book emphasizes security, focusing on Central Europe while addressing global concerns. Authored by researchers, experts, and scholars, this book is invaluable for Ph.D. students, professionals, and educators worldwide.The fourth dimension, individual security, spans healthcare, food safety, energy supplies, and economic security. Each chapter of this book emphasizes security, focusing on Central Europe while addressing global concerns. Authored by researchers, experts, and scholars, this book is invaluable for Ph.D. students, professionals, and educators worldwide.The fourth dimension, individual security, spans healthcare, food safety, energy supplies, and economic security. Each chapter of this book emphasizes security, focusing on Central Europe while addressing global concerns. Authored by researchers, experts, and scholars, this book is invaluable for Ph.D. students, professionals, and educators worldwide.The fourth dimension, individual security, spans healthcare, food safety, energy supplies, and economic security. Each chapter of this book emphasizes security, focusing on Central Europe while addressing global concerns. Authored by researchers, experts, and scholars, this book is invaluable for Ph.D. students, professionals, and educators worldwide.The fourth dimension, individual security, spans healthcare, food safety, energy supplies, and economic security. Each chapter of this book emphasizes security, focusing on Central Europe while addressing global concerns. Authored by researchers, experts, and scholars, this book is invaluable for Ph.D. students, professionals, and educators worldwide.The fourth dimension, individual security, spans healthcare, food safety, energy supplies, and economic security. Each chapter of this book emphasizes security, focusing on Central Europe while addressing global concerns. Authored by researchers, experts, and scholars, this book is invaluable for Ph.D. students, professionals, and educators worldwide.The fourth dimension, individual security, spans healthcare, food safety, energy supplies, and economic security. Each chapter of this book emphasizes security, focusing on Central Europe while addressing global concerns. Authored by researchers, experts, and scholars, this book is invaluable for Ph.D. students, professionals, and educators worldwide.

This book explores topics such as migration policies, defense against terrorism, national and international security, and public safety. The fourth dimension, individual security, spans healthcare, food safety, energy supplies, and economic security.

This volume presents significant advances in a number of theories and problems of Mathematical Analysis and its applications in disciplines such as Analytic Inequalities, Operator Theory, Functional Analysis, Approximation Theory, Functional Equations, Differential Equations, Wavelets, Discrete Mathematics and Mechanics.

This volume presents significant advances in a number of theories and problems of Mathematical Analysis and its applications in disciplines such as Analytic Inequalities, Operator Theory, Functional Analysis, Approximation Theory, Functional Equations, Differential Equations, Wavelets, Discrete Mathematics and Mechanics. The contributions focus on recent developments and are written by eminent scientists from the international mathematical community. Special emphasis is given to new results that have been obtained in the above mentioned disciplines in which Nonlinear Analysis plays a central role.Some review papers published in this volume will be particularly useful for a broader readership in Mathematical Analysis, as well as for graduate students. An attempt is given to present all subjects in this volume in a unified and self-contained manner, to be particularly useful to the mathematical community.

In this monograph, we study recent results on some categories of trigonometric/exponential sums along with various of their applications in Mathematical Analysis and Analytic Number Theory. Through the two chapters of this monograph, we wish to highlight the applicability and breadth of techniques of trigonometric/exponential sums in various problems focusing on the interplay of Mathematical Analysis and Analytic Number Theory. We wish to stress the point that the goal is not only to prove the desired results, but also to present a plethora of intermediate Propositions and Corollaries investigating the behaviour of such sums, which can also be applied in completely different problems and settings than the ones treated within this monograph.In the present work we mainly focus on the applications of trigonometric/exponential sums in the study of Ramanujan sums — which constitute a very classical domain of research in Number Theory — as well as the study of certain cotangent sums with a wide range of applications, especially in the study of Dedekind sums and a facet of the research conducted on the Riemann Hypothesis. For example, in our study of the cotangent sums treated within the second chapter, the methods and techniques employed reveal unexpected connections with independent and very interesting problems investigated in the past by R de la Bretèche and G Tenenbaum on trigonometric series, as well as by S Marmi, P Moussa and J-C Yoccoz on Dynamical Systems.Overall, a reader who has mastered fundamentals of Mathematical Analysis, as well as having a working knowledge of Classical and Analytic Number Theory, will be able to gradually follow all the parts of the monograph. Therefore, the present monograph will be of interest to advanced undergraduate and graduate students as well as researchers who wish to be informed on the latest developments on the topics treated.