Gabriel Ciobanu's Books

Foundations of Finitely Supported Structures

A Set Theoretical Viewpoint

By: Andrei Alexandru,Gabriel Ciobanu

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Foundations of Finitely Supported Structures

A Set Theoretical Viewpoint

By: Andrei Alexandru,Gabriel Ciobanu

This book presents a set theoretical development for the foundations of the theory of atomic and finitely supported structures. It analyzes whether a classical result can be adequately reformulated by replacing a 'non-atomic structure' with an 'atomic, finitely supported structure’. It also presents many specific properties, such as finiteness, cardinality, connectivity, fixed point, order and uniformity, of finitely supported atomic structures that do not have non-atomic correspondents. In the framework of finitely supported sets, the authors analyze the consistency of various forms of choice and related results. They introduce and study the notion of 'cardinality' by presenting various order and arithmetic properties. Finitely supported partially ordered sets, chain complete sets, lattices and Galois connections are studied, and new fixed point, calculability and approximation properties are presented. In this framework, the authors study the finitely supported L-fuzzy subsets of a finitely supported set and the finitely supported fuzzy subgroups of a finitely supported group. Several pairwise non-equivalent definitions for the notion of 'infinity' (Dedekind infinity, Mostowski infinity, Kuratowski infinity, Tarski infinity, ascending infinity) are introduced, compared and studied in the new framework. Relevant examples of sets that satisfy some forms of infinity while not satisfying others are provided. Uniformly supported sets are analyzed, and certain surprising properties are presented. Finally, some variations of the finite support requirement are discussed. The book will be of value to researchers in the foundations of set theory, algebra and logic.

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205

Publisher

Springer Nature

Published Date

ISBN 10

3030529622

ISBN 13

9783030529628

Mobility in Process Calculi and Natural Computing

By: Bogdan Aman,Gabriel Ciobanu

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Mobility in Process Calculi and Natural Computing

By: Bogdan Aman,Gabriel Ciobanu

The design of formal calculi in which fundamental concepts underlying interactive systems can be described and studied has been a central theme of theoretical computer science in recent decades, while membrane computing, a rule-based formalism inspired by biological cells, is a more recent field that belongs to the general area of natural computing. This is the first book to establish a link between these two research directions while treating mobility as the central topic. In the first chapter the authors offer a formal description of mobility in process calculi, noting the entities that move: links (π-calculus), ambients (ambient calculi) and branes (brane calculi). In the second chapter they study mobility in the framework of natural computing. The authors define several systems of mobile membranes in which the movement inside a spatial structure is provided by rules inspired by endocytosis and exocytosis. They study their computational power in comparison with the classical notion of Turing computability and their efficiency in algorithmically solving hard problems in polynomial time. The final chapter deals with encodings, establishing links between process calculi and membrane computing so that researchers can share techniques between these fields. The book is suitable for computer scientists working in concurrency and in biologically inspired formalisms, and also for mathematically inclined scientists interested in formalizing moving agents and biological phenomena. The text is supported with examples and exercises, so it can also be used for courses on these topics.

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217

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Springer Science & Business Media

Published Date

ISBN 10

3642248675

ISBN 13

9783642248672

Finitely Supported Mathematics

An Introduction

By: Andrei Alexandru,Gabriel Ciobanu

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Finitely Supported Mathematics

An Introduction

By: Andrei Alexandru,Gabriel Ciobanu

In this book the authors present an alternative set theory dealing with a more relaxed notion of infiniteness, called finitely supported mathematics (FSM). It has strong connections to the Fraenkel-Mostowski (FM) permutative model of Zermelo-Fraenkel (ZF) set theory with atoms and to the theory of (generalized) nominal sets. More exactly, FSM is ZF mathematics rephrased in terms of finitely supported structures, where the set of atoms is infinite (not necessarily countable as for nominal sets). In FSM, 'sets' are replaced either by `invariant sets' (sets endowed with some group actions satisfying a finite support requirement) or by `finitely supported sets' (finitely supported elements in the powerset of an invariant set). It is a theory of `invariant algebraic structures' in which infinite algebraic structures are characterized by using their finite supports. After explaining the motivation for using invariant sets in the experimental sciences as well as the connections with the nominal approach, admissible sets and Gandy machines (Chapter 1), the authors present in Chapter 2 the basics of invariant sets and show that the principles of constructing FSM have historical roots both in the definition of Tarski `logical notions' and in the Erlangen Program of Klein for the classification of various geometries according to invariants under suitable groups of transformations. Furthermore, the consistency of various choice principles is analyzed in FSM. Chapter 3 examines whether it is possible to obtain valid results by replacing the notion of infinite sets with the notion of invariant sets in the classical ZF results. The authors present techniques for reformulating ZF properties of algebraic structures in FSM. In Chapter 4 they generalize FM set theory by providing a new set of axioms inspired by the theory of amorphous sets, and so defining the extended Fraenkel-Mostowski (EFM) set theory. In Chapter 5 they define FSM semantics for certain process calculi (e.g., fusion calculus), and emphasize the links to the nominal techniques used in computer science. They demonstrate a complete equivalence between the new FSM semantics (defined by using binding operators instead of side conditions for presenting the transition rules) and the known semantics of these process calculi. The book is useful for researchers and graduate students in computer science and mathematics, particularly those engaged with logic and set theory.

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188

Publisher

Springer

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ISBN 10

3319422820

ISBN 13

9783319422824

Fixing Motorcycles in Post-Repair Societies

Technology, Aesthetics and Gender

By: Gabriel Jderu

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Fixing Motorcycles in Post-Repair Societies

Technology, Aesthetics and Gender

By: Gabriel Jderu

Most social science studies on automobility have focused on the production, usage, identity construction and aesthetic improvements of personal means of transportation. What happens if we shift the focus to the labour, knowledge and social relations that go into the unavoidable moments of maintenance and repair? Taking motorcycling in Romania as an ethnographic entry point, this book documents how bikers handle the inevitable moments of malfunction and breakdown. Using both mobile and sedentary research methods, the book describes the joys and troubles experienced by amateur mechanics, professional mechanics and untechnical men and women when fixing bikes.

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165

Publisher

Berghahn Books

Published Date

ISBN 10

1800738781

ISBN 13

9781800738782

Romanians in Western Europe

Migration, Status Dilemmas, and Transnational Connections

By: Remus Gabriel Anghel

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Romanians in Western Europe

Migration, Status Dilemmas, and Transnational Connections

By: Remus Gabriel Anghel

In recent years, Romanians have become the second largest migrant group in Western Europe. Following the liberalization of border controls and the massive economic and political changes in Eastern Europe, human mobility has increased and is becoming a permanent feature of post-Cold War Europe. The arrival of many Eastern Europeans, with Romanians being the largest migrant group, has produced public concerns on immigration in some West European countries. This is particularly the case in Italy, where Romanian irregular migrants are often stigmatized as poor troublemakers by authorities and the mass media. This book challenges such commonly-held assumptions that artificially divide migrants into categories of wished and unwished immigrants—winners and losers of international migration. This book compares two migrant groups. The first is composed of ethnic Germans who migrated legally from Timisoara, Romania, to Nuremberg, Germany. The second is made up of those who migrated irregularly from Borsa, Romania, to Milan, Italy. The analysis highlights a paradoxical situation. Irregular Romanian migrants in Milan had fewer rights and opportunities, yet through migration they gained prestige and came to enjoy a sense of success. Alternately, the Germans who had migrated to Nuremberg, who received more rights and opportunities, perceived that they had suffered a loss of social prestige. The focus on migrants’ social status employed in the book seeks to clarify this puzzle and provide an analytical framework for researching the linkages between the migration and incorporation of Romanians—who are today European citizens—and European states’ migration policies and migrant transnationalism.

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219

Publisher

Lexington Books

Published Date

ISBN 10

073917889X

ISBN 13

9780739178898

Case Files Internal Medicine, Sixth Edition

By: Eugene C. Toy,Gabriel Aisenberg

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Case Files Internal Medicine, Sixth Edition

By: Eugene C. Toy,Gabriel Aisenberg

REAL-LIFE CASES SHARPEN TOUR CRITICAL THINKING SKILLS FOR YOUR CLERKSHIP AND THE SHELF EXAM Case Files: Internal Medicine presents realistic clinical scenarios to enhance and hone your clinical decision-making skills. Sixty high-yield cases illustrate essential concepts in internal medicine. Each case includes an easy-to-understand discussion correlated to key concepts, definitions of key terms, clinical pearls, and board-style review questions to reinforce your learning. This updated sixth edition features a new format with bulleted summaries, shorter paragraphs, and clearer headings. New Cases on Metabolic Syndrome, Alcoholic Cirrhosis, Cushing Syndrome, Parkinson’s Disease, Polycythemia Vera, and Opiate Overdose Realistic internal medicine cases with high-yield discussions aligned to clerkship guidelines USMLE-style review questions and clinical pearls accompany each case Challenge Questions help you assess your ability to integrate and apply your knowledge Primer on how to approach clinical problems and think like an experienced doctor

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Page Count

689

Publisher

McGraw Hill Professional

Published Date

ISBN 10

1260469972

ISBN 13

9781260469974

Foundations of Finitely Supported Structures

A Set Theoretical Viewpoint

By: Andrei Alexandru,Gabriel Ciobanu

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Foundations of Finitely Supported Structures

A Set Theoretical Viewpoint

By: Andrei Alexandru,Gabriel Ciobanu

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Page Count

205

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Springer Nature

Published Date

ISBN 10

3030529622

ISBN 13

9783030529628

Mobility in Process Calculi and Natural Computing

By: Bogdan Aman,Gabriel Ciobanu

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Mobility in Process Calculi and Natural Computing

By: Bogdan Aman,Gabriel Ciobanu

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217

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Springer Science & Business Media

Published Date

ISBN 10

3642248675

ISBN 13

9783642248672

Modelling in Molecular Biology

By: Gabriel Ciobanu,Grzegorz Rozenberg

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Modelling in Molecular Biology

By: Gabriel Ciobanu,Grzegorz Rozenberg

Presents new mathematical and computational models as well as statistical methods for the solution of fundamental problems in the biosciences. Describes how to find regularities among empirical data, as well as conceptual models and theories.

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328

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Springer Science & Business Media

Published Date

ISBN 10

3540407995

ISBN 13

9783540407997

Fundamentals of Computation Theory

12th International Symposium, FCT'99 Iasi, Romania, August 30 - September 3, 1999 Proceedings

By: Gabriel Ciobanu,Gheorghe Păun

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Fundamentals of Computation Theory

12th International Symposium, FCT'99 Iasi, Romania, August 30 - September 3, 1999 Proceedings

By: Gabriel Ciobanu,Gheorghe Păun

This book constitutes the refereed proceedings of the 12th International Symposium on Fundamentals of Computation Theory, FCT '99, held in Iasi, Romania in August/September 1999. The 42 revised full papers presented together with four invited papers were carefully selected from a total of 102 submissions. Among the topics addressed are abstract data types, algorithms and data structures, automata and formal languages, categorical and topological approaches, complexity, computational geometry, concurrency, cryptology, distributed computing, logics in computer science, process algebras, symbolic computation, molecular computing, quantum computing, etc.

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582

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Springer Science & Business Media

Published Date

ISBN 10

3540664122

ISBN 13

9783540664123

Applications of Membrane Computing

By: Gabriel Ciobanu,Mario J. Pérez-Jiménez,Gheorghe Păun

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Applications of Membrane Computing

By: Gabriel Ciobanu,Mario J. Pérez-Jiménez,Gheorghe Păun

Membrane computing is a branch of natural computing which investigates computing models abstracted from the structure and functioning of living cells and from their interactions in tissues or higher-order biological structures. The models considered, called membrane systems (P systems), are parallel, distributed computing models, processing multisets of symbols in cell-like compartmental architectures. In many applications membrane systems have considerable advantages – among these are their inherently discrete nature, parallelism, transparency, scalability and nondeterminism. In dedicated chapters, leading experts explain most of the applications of membrane computing reported so far, in biology, computer science, computer graphics and linguistics. The book also contains detailed reviews of the software tools used to simulate P systems.

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439

Publisher

Springer

Published Date

ISBN 10

3540250174

ISBN 13

9783540250173

Book's by Gabriel Ciobanu

Foundations of Finitely Supported Structures

Foundations of Finitely Supported Structures

Mobility in Process Calculi and Natural Computing

Mobility in Process Calculi and Natural Computing

Finitely Supported Mathematics

Finitely Supported Mathematics

Fixing Motorcycles in Post-Repair Societies

Fixing Motorcycles in Post-Repair Societies

Romanians in Western Europe

Romanians in Western Europe

Case Files Internal Medicine, Sixth Edition

Case Files Internal Medicine, Sixth Edition

Foundations of Finitely Supported Structures

Foundations of Finitely Supported Structures

Mobility in Process Calculi and Natural Computing

Mobility in Process Calculi and Natural Computing

Modelling in Molecular Biology

Modelling in Molecular Biology

Fundamentals of Computation Theory

Fundamentals of Computation Theory

Applications of Membrane Computing

Applications of Membrane Computing

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