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Qualitative Investment Decision-Making Methods under Hesitant Fuzzy Environments (Studies in Fuzziness and Soft Computing #376)
by Wei Zhou Zeshui XuThis book describes five qualitative investment decision-making methods based on the hesitant fuzzy information. They are: (1) the investment decision-making method based on the asymmetric hesitant fuzzy sigmoid preference relations, (2) the investment decision-making method based on the hesitant fuzzy trade-off and portfolio selection, (3) the investment decision-making method based on the hesitant fuzzy preference envelopment analysis, (4) the investment decision-making method based on the hesitant fuzzy peer-evaluation and strategy fusion, and (5) the investment decision-making method based on the EHVaR measurement and tail analysis.
Qualitative Markt- und Konsumforschung: Einführung und Praxis-Handbuch (Konsumsoziologie und Massenkultur)
by Thomas Kühn Kay-Volker KoschelDie Autoren Thomas Kühn und Kay-Volker Koschel geben in diesem Buch eine praxisnahe Einführung in Grundgedanken und Methoden der qualitativen Markt- und Konsumforschung. Zur Veranschaulichung werden zahlreiche Praxisbeispiele gegeben und typische Fehler bei der Konzeption typischer Studien identifiziert und Lösungsmöglichkeiten angeboten.
Qualitative Mathematics for the Social Sciences: Mathematical Models for Research on Cultural Dynamics (Cultural Dynamics of Social Representation)
by Lee RudolphIn this book Lee Rudolph brings together international contributors who combine psychological and mathematical perspectives to analyse how qualitative mathematics can be used to create models of social and psychological processes. Bridging the gap between the fields with an imaginative and stimulating collection of contributed chapters, the volume updates the current research on the subject, which until now has been rather limited, focussing largely on the use of statistics. Qualitative Mathematics for the Social Sciences contains a variety of useful illustrative figures, introducing readers from the social sciences to the rich contribution that modern mathematics has made to our knowledge of logic, structures, and dynamic systems. A beguiling array of conceptual systems, topological models and fractals are discussed which transcend the application of statistics, and bring a fresh perspective to the study of social representations. The wide selection of qualitative mathematical methodologies discussed in this volume will be hugely valuable to higher-level undergraduate and postgraduate students of psychology, sociology and mathematics. It will also be useful for researchers, academics and professionals from the social sciences who want a firmer grasp on the use of qualitative mathematics.
Qualitative Methods and Data Analysis Using ATLAS.ti: A Comprehensive Researchers’ Manual (Springer Texts in Social Sciences)
by Ajay GuptaThis book provides an in-depth roadmap for qualitative research methods and data analysis across disciplines using ATLAS.ti. It encompasses and rationalizes key qualitative research concepts and methods with innovative frameworks to enrich the reader’s understanding of qualitative research methods and data analysis. The book contains multiple real-world projects that assist readers in developing conceptual and theoretical knowledge, as well as gaining insights from fieldwork, visualizing data collection, analysis, and methodological interpretations.This easy to use book provides a pragmatic approach to qualitative methods, proficiency in capturing field observations, user-friendly steps to data analysis starting from transcription, preparation of data, reading and identification of quotations, coding, memoing, commenting, code groups, creating smart codes and groups using set, semantic, and proximity operators resulting in generating numerous insightful thematic reports in a variety of formats.More notable features:- Demonstrates systematic roots to research from begin to end- Provides practical advice on how to overcome field challenges during data collection, ethical considerations, and step-by-step procedures for gaining access to participants and capturing holistic data- Includes numerous numerical arguments, interpretations, and explanations for concepts, themes, variables, networks, and emerging concepts- Includes several research frameworks and data analysis guideposts on real-world research projects with thorough procedures covering 267 images and 38 tables- Compelling for quantitative research and mixed methods approachesThe book's straightforward and user-friendly format makes it simple and easy to use, comprehend, and interpret for anyone working with ATLAS.ti.
Qualitative Methods in Economics (Routledge Frontiers of Political Economy)
by Mirjana Radović-Marković Beatrice Avolio AlecchiDespite numerous books on research methodology, many have failed to present a complete, hands-on, practical book to lead college classes or individuals through the research process. We are seeing more and more scientific papers from all research fields that fail to meet the basic criteria in terms of research methods, as well as the structure, writing style and presentation of results. This book aims to address this gap in the market by providing an authoritative, easy to follow guide to research methods and how to apply them. Qualitative Methods in Economics is focused not only on the research methods/techniques but also the methodology. The main objective of this book is to discuss qualitative methods and their use in economics and social science research. Chapters identify several of the research approaches commonly used in social studies, from the importance of the role of science through to the techniques of data collection. Using an example research paper to examine the methods used to present the research, the second half of this book breaks down how to present and format your results successfully. This book will be of use to students and researchers who want to improve their research methods and read up on the new and cutting edge advances in research methods, as well as those who like to study ways to improve the research process.
Qualitative Theory in Structural Mechanics: Qualitative Properties and Existence of Solutions
by Dajun Wang Qishen Wang Beichang (Bert) HeThis book focuses on the qualitative theory in structural mechanics, an area that remains underdeveloped. The qualitative theory mainly deals with the static deformation and vibrational modes of linear elastic structures, and cover subjects such as qualitative properties and the existence of solutions.Qualitative properties belong to one type of structure, are at the system level and of clear regularity, and often result from analytical derivation and logical reasoning. As for the existence of solutions, it addresses a fundamental issue in structural mechanics, and has far-reaching implications for engineering applications.A better understanding of qualitative properties can assist in both numerical computation and experimental studies. It also promotes the development of better dynamic designs for structures. At the same time, a sound grasp of the existence of solutions and related subjects can aid in quantitative analysis, and help researchers establish the theoretical background essential to their work. This book is among the few that is dedicated exclusively to the qualitative theory in structural mechanics and systematically introduces the important and challenging area to a wide audience, including graduate students in engineering.
Qualitative Theory of Dynamical Systems, Tools and Applications for Economic Modelling
by Gian Italo Bischi Anastasiia Panchuk Davide RadiThe book presents the lectures delivered during a short course held at Urbino University in summer 2015 on qualitative theory of dynamical systems, included in the activities of the COST Action IS1104 "The EU in the new economic complex geography: models, tools and policy evaluation". It provides a basic introduction to dynamical systems and optimal control both in continuous and discrete time, as well as some numerical methods and applications in economic modelling. Economic and social systems are intrinsically dynamic, characterized by interdependence, nonlinearity and complexity, and these features can only be approached using a qualitative analysis based on the study of invariant sets (equilibrium points, limit cycles and more complex attractors, together with the boundaries of their basins of attraction), which requires a trade-off between analytical, geometrical and numerical methods. Even though the early steps of the qualitative theory of dynamical systems have been in continuous time models, in economic and social modelling discrete time is often used to describe event-driven (often decision-driven) evolving systems. The book is written for Ph. D. and master's students, post-doctoral fellows, and researchers in economics or sociology, and it only assumes a basic knowledge of calculus. However it also suggests some more advanced topics.
The Qualitative Theory of Ordinary Differential Equations: An Introduction
by John A. Nohel Fred Brauer"This is a very good book ... with many well-chosen examples and illustrations." -- American Mathematical MonthlyThis highly regarded text presents a self-contained introduction to some important aspects of modern qualitative theory for ordinary differential equations. It is accessible to any student of physical sciences, mathematics or engineering who has a good knowledge of calculus and of the elements of linear algebra. In addition, algebraic results are stated as needed; the less familiar ones are proved either in the text or in appendixes.The topics covered in the first three chapters are the standard theorems concerning linear systems, existence and uniqueness of solutions, and dependence on parameters. The next three chapters, the heart of the book, deal with stability theory and some applications, such as oscillation phenomena, self-excited oscillations and the regulator problem of Lurie.One of the special features of this work is its abundance of exercises-routine computations, completions of mathematical arguments, extensions of theorems and applications to physical problems. Moreover, they are found in the body of the text where they naturally occur, offering students substantial aid in understanding the ideas and concepts discussed. The level is intended for students ranging from juniors to first-year graduate students in mathematics, physics or engineering; however, the book is also ideal for a one-semester undergraduate course in ordinary differential equations, or for engineers in need of a course in state space methods.
Quality Control with R
by Mariano Prieto Corcoba Javier M. Moguerza Emilio L. CanoPresenting a practitioner's guide to capabilities and best practices of quality control systems using the R programming language, this volume emphasizes accessibility and ease-of-use through detailed explanations of R code as well as standard statistical methodologies. In the interest of reaching the widest possible audience of quality-control professionals and statisticians, examples throughout are structured to simplify complex equations and data structures, and to demonstrate their applications to quality control processes, such as ISO standards. The volume balances its treatment of key aspects of quality control, statistics, and programming in R, making the text accessible to beginners and expert quality control professionals alike. Several appendices serve as useful references for ISO standards and common tasks performed while applying quality control with R.
Quality Engineering Techniques: An Innovative and Creative Process Model
by Ramin Rostamkhani Mahdi KarbasianIn today’s industrial and complex world, the progress of change is incredible. The amount of information which needs to be analyzed is very large and time has become more and more limited. Industries and firms of all sizes desire to increase productivity and sustainability to keep their competitive edge in the marketplace. One of the best tools for achieving this is the application of Quality Engineering Techniques (QET). This book will introduce the integrated model and the numerical applications for implementing it.
Quality Management in Reverse Logistics
by Yiannis NikolaidisQuality Management in Reverse Logistics intends to develop, collect, examine and evaluate a number of quality management (QM) tools and techniques, which can be applied in practice in order to understand, review and improve any closed-loop supply chain process. In other words, the book aims to examine the existing relationship between various well-developed and thoroughly studied quality issues, such as QM, quality assurance, standardization of processes and statistical quality control and the emerging research area of reverse logistics. Quality Management in Reverse Logistics contains modeling and quantitative methods that could be used by practitioners and academics in the reverse logistics industry, as well as a thorough description of QM tools and techniques. The book leads the potential reader to broaden their scope of thinking and acting in the new, promising area of reverse logistics, where QM can be applied.
The Quality of European Societies: A Compilation of Composite Indicators (Social Indicators Research Series #75)
by Eduardo Bericat María Luisa Jiménez-RodrigoThis volume presents a compilation of composite indicators created in order to measure important aspects of the quality of European societies. It examines three main questions: do Europeans live in good societies and enjoy good lives; are European societies becoming better as time passes, or is their quality slowly deteriorating; is the quality of life of Europe’s citizens improving over time or is it gradually and irrecoverably getting worse. The volume uses a precise and rigorous system of information to answer these questions and to assess the current situation and monitor the quality of European societies. It describes and discusses fourteen key domains, and per chapter, presents five rankings of EU countries based on composite indicators, which are used as one of the best instruments social science has to synthesize a large amount of information, and they are especially well suited to measure multidimensional social phenomena. The new System of Indices on the Quality of European Societies (SIQES) presented in this volume offers a very broad and rich empirical overview of more than 70 social composite indicators and their nearly 300 dimensions. One of the key findings coming out from the SIQES is that, according to the societal quality of European countries, there exist five different “Europes” inside Europe.
Quality of Life in Argentina: Maps, Indexes and Regional Analysis from 2010 (The Latin American Studies Book Series)
by Claudia Andrea Mikkelsen Santiago Linares Guillermo Angel VelázquezThis book studies inequalities in the quality of life of the Argentine population at the regional level. It considers the six regions of the National Statistical System: Northwest, Northeast, Cuyo, Pampa, Metropolitan, and Patagonia. A series of thematic maps is provided and interpreted, which are related to: a. socioeconomic issues (education, health, housing) and b. environmental aspects (environmental problems and recreational resources). These dimensions (socioeconomic and environmental) are integrated into quality of life indexes that allow the comparison of the situation of the population residing in any region of the national territory.
Quality of life in Italy
by Filomena Maggino Giampaolo NuvolatiThe outcome of the first Italian National Conference on Quality of Life, this volume is full of cogent analysis of topics and issues related to well being and quality of life, including focused papers on specific population groupings and discrete themes. Held in Florence in September 2010, the conference saw the creation of the Italian Association of Quality of Life Studies, devised as a forum for this varied field of research with a rapidly expanding profile in the context of the continuing financial crisis. The papers address a number of recognized quality-of-life concerns, including public health, wealth distribution, employment, political participation and the perception of crime. Contributors deploy innovative methods of analyzing official statistics that result in more complex and multidimensional indicators. Some papers provide data on other European nations that allow for comparative assessment, while others set out fresh approaches to evaluating quality of life itself. Highly relevant not just to academics, but to policy makers and practitioners in a range of sectors, this publication explores important aspects of a crucial contemporary subject.
Quality of Life in Urban Landscapes: In Search of a Decision Support System (The Urban Book Series)
by Roberta Cocci Grifoni Rosalba D'Onofrio Massimo SargoliniThis volume introduces an innovative tool for the development of sustainable cities and the promotion of the quality of life of city inhabitants. It presents a decision-support system to orient public administrations in identifying development scenarios for sustainable urban and territorial transformations. The authors have split the volume into five parts, which respectively describe the theoretical basis of the book, the policies in question and indicators that influence them, the decision-support system that connects indicators to policies, the case study of Ancona, Italy, and potential future directions for this work. This volume is based on transdisciplinary research completed in May 2016 that involved about 40 researchers at The University of Camerino, Italy and other European universities. With purchase of this book, readers will also have access to Electronic Supplementary Material that contains a database with groups of indicators of assessment of urban quality of life and a toolkit containing the data processing system and management information system used in the book’s case study.
The Quality of Measurements
by Paul Makinen A. E. Fridman Andrew SabakThis monograph and translation from the Russian describes in detail and comments on the fundamentals of metrology. The basic concepts of metrology, the principles of the International System of Units SI, the theory of measurement uncertainty, the new methodology of estimation of measurement accuracy on the basis of the uncertainty concept, as well as the methods for processing measurement results and estimating their uncertainty are discussed from the modern position. It is shown that the uncertainty concept is compatible with the classical theory of accuracy. The theory of random uncertainties is supplemented with their most general description on the basis of generalized normal distribution; the instrumental systematic errors are presented in connection with the methodology of normalization of the metrological characteristics of measuring instruments. The information about modern systems of traceability is given. All discussed theoretical principles and calculation methods are illustrated with examples.
Quality of Work-Life During Pandemic: Data Analysis and Mathematical Modeling (Studies in Big Data #100)
by Gitanjali Rahul Shinde Soumi Majumder Haribhau R. Bhapkar Parikshit N. MahalleThis book is focused on the impact of the COVID-19 pandemic on different sectors, i.e., education, real estate, health, and agriculture. The lockdown has been announced to control the spread of COVID-19 infections, however people/industries/organizations were not ready for lockdown and it has greatly affected their growth. The front workers in the healthcare sector suffered a lot as major responsibilities they needed to carry on. The education sector is also hampered due to the pandemic as schools, colleges were closed and teaching, examinations were carried out on online platforms. These platforms were new to teachers as well as students. The real estate sector faced tremendous loss in this pandemic as people were scared and no one ready to invest their money in such an uncertain time. The agriculture filed is also suffered as raw materials required for agriculture were not available readily due to pandemic. This book presents a survey that is conducted to understand the impact of COVID-19 on the quality of work-life in various sectors. The survey is focused majorly on four sectors, i.e. education, healthcare, real estate and agriculture. Data analysis is done based on responses of survey and mathematical modeling is provided for each case study.
Quanta and Fields: The Biggest Ideas in the Universe
by Sean CarrollThe instant New York Times bestsellerQuanta and Fields, the second book of Sean Carroll&’s already internationally acclaimed series The Biggest Ideas in the Universe, is an adventure into the bare stuff of reality. Sean Carroll is creating a profoundly new approach to sharing physics with a broad audience, one that goes beyond analogies to show how physicists really think. He cuts to the bare mathematical essence of our most profound theories, explaining every step in a uniquely accessible way. Quantum field theory is how modern physics describes nature at its most profound level. Starting with the basics of quantum mechanics itself, Sean Carroll explains measurement and entanglement before explaining how the world is really made of fields. You will finally understand why matter is solid, why there is antimatter, where the sizes of atoms come from, and why the predictions of quantum field theory are so spectacularly successful. Fundamental ideas like spin, symmetry, Feynman diagrams, and the Higgs mechanism are explained for real, not just through amusing stories. Beyond Newton, beyond Einstein, and all the intuitive notions that have guided homo sapiens for millennia, this book is a journey to a once unimaginable truth about what our universe is.
Quantal Density Functional Theory
by Viraht SahniThis book deals with quantal density functional theory (QDFT) which is a time-dependent local effective potential theory of the electronic structure of matter. The treated time-independent QDFT constitutes a special case. In the 2nd edition, the theory is extended to include the presence of external magnetostatic fields. The theory is a description of matter based on the 'quantal Newtonian' first and second laws which is in terms of "classical" fields that pervade all space, and their quantal sources. The fields, which are explicitly defined, are separately representative of electron correlations due to the Pauli exclusion principle, Coulomb repulsion, correlation-kinetic, correlation-current-density, and correlation-magnetic effects. The book further describes Schrödinger theory from the new physical perspective of fields and quantal sources. It also describes traditional Hohenberg-Kohn-Sham DFT, and explains via QDFT the physics underlying the various energy functionals and functional derivatives of the traditional approach to electronic structure.
Quanten-Zufallszahlengenerierung: Theorie und Praxis
by Stefan Rass Stefan Schauer Christian Kollmitzer Benjamin RainerDieses Buch bietet einen Überblick über die neuesten Implementierungen von Quanten-Zufallszahlengeneratoren (QRNGs) und untersucht insbesondere deren Beziehung zu klassischen statistischen Zufallsmodellen und numerischen Techniken zur Berechnung von Zufallszahlen. Der Leser - der idealerweise einen Hintergrund in klassischer Statistik, Informatik oder Kryptographie hat - wird Schritt für Schritt in die Welt der Quantenbits eingeführt, und es werden explizite Beziehungen zwischen QRNGs und ihren klassischen Gegenstücken aufgezeigt. Die Erzeugung von Zufallszahlen ist eine wichtige Säule der Kryptographie. Die Nutzung des Zufalls, der Quantenphänomenen innewohnt, ist ein sich rasch entwickelnder Zweig der Quantenkryptografie mit unzähligen Anwendungen für die Zukunft. Der Wert der Quantenzufälligkeit für kryptografische Zwecke wird empirisch durch statistische Auswertungen der Leistung von QRNGs im Vergleich zu klassischen Techniken zur Erzeugung echter und pseudozufälliger Zahlen nachgewiesen. Das Buch bietet dann einen Überblick über die technischen Implementierungen von QRNGs, bevor eine abschließende Diskussion über die wichtigsten Errungenschaften und verbleibenden Hindernisse auf diesem Gebiet die Berichterstattung abrundet und gleichzeitig die Tür für zukünftige Forschungsrichtungen öffnet.
Quantenmechanik: Einführung in die mathematische Formulierung (essentials)
by Martin PieperWer schon immer die Hieroglyphen auf Sheldons Tafel in der Fernsehserie The Big Bang Theory verstehen oder ganz genau wissen wollte, was es mit dem Schicksal von Schrödingers Katze auf sich hat, findet in diesem essential eine kurze, anschauliche Einführung in die Welt der Quantenmechanik. Speziell fokussiert sich der Text auf die mathematische Beschreibung im Hilbertraum. Hierbei geht der Inhalt über populärwissenschaftliche Darstellungen hinaus, ist allerdings trotzdem durch die anschaulichen Beispiele für Lesende ohne spezielle Vorkenntnisse geeignet. Der Autor:Prof. Dr. Martin Pieper ist seit 2011 Professor für Mathematik und Simulation an der FH Aachen. Vor seinem Ruf an die FH Aachen war er wissenschaftlicher Mitarbeiter in der Abteilung Optimierung des Fraunhofer-Instituts für Techno- und Wirtschaftsmathematik.
Quantenmechanik zu Fuß 1: Grundlagen
by Jochen PadeDie beiden Bände von Quantenmechanik zu Fuß führen Schritt für Schritt in die Grundlagen der nichtrelativistischen Quantenmechanik ein.Dieser erste Band konzentriert sich hauptsächlich auf die wesentlichen Prinzipien, während Anwendungen und Erweiterungen des Formalismus in Band 2 zu finden sind.Um die Grundideen der Quantenmechanik und ihre mathematische Formulierung schnell und anschaulich darzustellen, wird in den ersten Kapiteln systematisch zwischen analytischer und algebraischer Darstellung gewechselt. Auf diese Weise können neben dem traditionellen Lehrstoff frühzeitig auch aktuelle Themen detailliert besprochen werden, wie z.B. Neutrino-Oszillationen und Quantenkryptographie. Ausgearbeitete Beispiele erleichtern den Zugang. Die erforderlichen mathematischen Werkzeuge werden dabei nach Bedarf eingeführt. Ein weiterer Schwerpunkt ist die Darstellung und Diskussion des Messproblems und anderer grundlegender konzeptueller Fragen. Ein Kapitel über die Postulate der Quantenmechanik schließt diesen ersten Band ab.Im Anhang findet sich eine kompakte Zusammenfassung der wichtigsten mathematischen Hilfsmittel, sodass auf ergänzende Literatur verzichten werden kann. Außerdem werden dort weiterführende Themen wie der Quanten-Zeno-Effekt und Time-delay-Experimente behandelt. Über 250 Übungsaufgaben mit ausführlichen Lösungen helfen dabei, das Verständnis für die behandelten Themen zu vertiefen.Die vorliegende überarbeitete und aktualisierte zweite Auflage ist um eine Einführung in einige Ideen und Probleme der relativistischen Quantenmechanik erweitert. In diesem ersten Band werden die Klein-Gordon- und die Dirac-Gleichung behandelt. Für die Relativistik benötigte Grundlagen anderer Gebiete werden in kompakter Form bereit gestellt (spezielle Relativitätstheorie, klassische Feldtheorie und Elektrodynamik).Quantenmechanik zu Fuß richtet sich an alle Studierenden der Physik und andere, die eine angemessen einfache, frische und moderne Einführung in die Quantenmechanik suchen. Das Buch eignet sich auch sehr gut zum Selbststudium.
Quantenmechanik zu Fuß 2: Anwendungen und Erweiterungen
by Jochen PadeDie beiden Bände von Quantenmechanik zu Fuß führen Schritt für Schritt in die Grundlagen der nichtrelativistischen Quantenmechanik ein.Während sich der erste Band mit den wesentlichen Prinzipien befasst, werden in diesem zweiten Band Anwendungen und Erweiterungen auf komplexere Probleme erörtert.Neben Gebieten, die zum traditionellen Stoff der Quantenmechanik gehören wie z.B. Symmetrien, Streutheorie oder Vielteilchenprobleme, werden auch aktuelle Themen ausführlich behandelt, etwa Verschränkung, Bellsche Ungleichung, Dekohärenz, Quantencomputer und andere Aspekte der Quanteninformation. Ausgearbeitete Beispiele erleichtern den Zugang. Die Realismusdebatte und andere konzeptuelle Fragen der Quantenmechanik werden ausführlich besprochen. Ein Kapitel über die Interpretationen der Quantenmechanik schließt diesen zweiten Band ab.Im Anhang wird das erforderliche mathematische Handwerkszeug kompakt zusammengestellt. Außerdem werden dort weiterführendeThemen wie der Lenz-Vektor, das Hardy-Experiment und der Shor-Algorithmus detailliert dargestellt. Über 150 Übungsaufgaben mit ausführlichen Lösungen helfen dabei, das Verständnis für die behandelten Themen zu vertiefen. Die vorliegende überarbeitete und aktualisierte zweite Auflage ist um eine Einführung in einige Ideen und Probleme der relativistischen Quantenmechanik erweitert. In diesem zweiten Band wird ein Überblick über die Quantenfeldtheorie gegeben und grundlegende Konzepte der Quantenelektrodynamik eingehend behandelt.Quantenmechanik zu Fuß richtet sich an alle Studierenden der Physik und andere, die eine angemessen einfache, frische und moderne Einführung in die Quantenmechanik suchen. Das Buch eignet sich auch sehr gut zum Selbststudium.
Quantification of Uncertainty: QUIET selected contributions (Lecture Notes in Computational Science and Engineering #137)
by Marta D’Elia Max Gunzburger Gianluigi RozzaThis book explores four guiding themes – reduced order modelling, high dimensional problems, efficient algorithms, and applications – by reviewing recent algorithmic and mathematical advances and the development of new research directions for uncertainty quantification in the context of partial differential equations with random inputs. Highlighting the most promising approaches for (near-) future improvements in the way uncertainty quantification problems in the partial differential equation setting are solved, and gathering contributions by leading international experts, the book’s content will impact the scientific, engineering, financial, economic, environmental, social, and commercial sectors.
Quantifiers, Quantifiers, and Quantifiers: Themes in Logic, Metaphysics, and Language
by Alessandro TorzaThis volume covers a wide range of topics that fall under the 'philosophy of quantifiers', a philosophy that spans across multiple areas such as logic, metaphysics, epistemology and even the history of philosophy. It discusses the import of quantifier variance in the model theory of mathematics. It advances an argument for the uniqueness of quantifier meaning in terms of Evert Beth's notion of implicit definition and clarifies the oldest explicit formulation of quantifier variance: the one proposed by Rudolf Carnap. The volume further examines what it means that a quantifier can have multiple meanings and addresses how existential vagueness can induce vagueness in our modal notions. Finally, the book explores the role played by quantifiers with respect to various kinds of semantic paradoxes, the logicality issue, ontological commitment, and the behavior of quantifiers in intensional contexts.