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The author introduces Lawvere and Tierney's concept of topos theory, a striking development in category theory that unites a number of important but seemingly diverse notions from algebraic geometry, set theory, and intuitionistic logic. Topos theory has led to the forging of surprising new links between classical and constructive mathematics. Bell presents toposes as the models of theories--the so-called local set theories--formulated within a typed intuitionistic logic.
Category theory. Homological algebra --- Toposes --- Set theory --- Logic, symbolic and mathematical --- Logic, Symbolic and mathematical --- Topoi (Mathematics) --- Categories (Mathematics) --- Aggregates --- Classes (Mathematics) --- Ensembles (Mathematics) --- Mathematical sets --- Sets (Mathematics) --- Theory of sets --- Mathematics --- Algebra of logic --- Logic, Universal --- Mathematical logic --- Symbolic and mathematical logic --- Symbolic logic --- Algebra, Abstract --- Metamathematics --- Syllogism --- Logic, Symbolic and mathematical. --- Set theory. --- Toposes. --- Topos (mathématiques) --- Logique mathématique --- Théorie des ensembles --- Logique mathématique --- Théorie des ensembles --- Topos (mathématiques) --- Catégories (mathématiques)
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A compact survey, at the elementary level, of some of the most important concepts of mathematics. Attention is paid to their technical features, historical development and broader philosophical significance. Each of the various branches of mathematics is discussed separately, but their interdependence is emphasised throughout. Certain topics - such as Greek mathematics, abstract algebra, set theory, geometry and the philosophy of mathematics - are discussed in detail. Appendices outline from scratch the proofs of two of the most celebrated limitative results of mathematics: the insolubility of the problem of doubling the cube and trisecting an arbitrary angle, and the Gödel incompleteness theorems. Additional appendices contain brief accounts of smooth infinitesimal analysis - a new approach to the use of infinitesimals in the calculus - and of the philosophical thought of the great 20th century mathematician Hermann Weyl. Readership: Students and teachers of mathematics, science and philosophy. The greater part of the book can be read and enjoyed by anyone possessing a good high school mathematics background.
Mathematics --- History. --- History --- Philosophy and science. --- Mathematics. --- Mathematical logic. --- Algebra. --- Geometry. --- Philosophy of Science. --- History of Mathematical Sciences. --- Mathematical Logic and Foundations. --- Euclid's Elements --- Mathematical analysis --- Algebra of logic --- Logic, Universal --- Mathematical logic --- Symbolic and mathematical logic --- Symbolic logic --- Algebra, Abstract --- Metamathematics --- Set theory --- Syllogism --- Annals --- Auxiliary sciences of history --- Math --- Science --- Science and philosophy
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Independence (Mathematics) --- 510.2 --- Logic, Symbolic and mathematical --- Foundations of mathematics --- Algebra, Boolean. --- Axiomatic set theory. --- Model theory. --- Independence (Mathematics). --- 510.2 Foundations of mathematics --- Algebra, Boolean --- Axiomatic set theory --- Model theory --- Axioms --- Set theory --- Boolean algebra --- Boole's algebra --- Algebraic logic
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One of the most remarkable recent occurrences in mathematics is the refounding, on a rigorous basis, of the idea of infinitesimal quantity, a notion which played an important role in the early development of the calculus and mathematical analysis. In this new edition basic calculus, together with some of its applications to simple physical problems, are presented through the use of a straightforward, rigorous, axiomatically formulated concept of 'zero-square', or 'nilpotent' infinitesimal - that is, a quantity so small that its square and all higher powers can be set, literally, to zero. The systematic employment of these infinitesimals reduces the differential calculus to simple algebra and, at the same time, restores to use the "infinitesimal" methods figuring in traditional applications of the calculus to physical problems - a number of which are discussed in this book. This edition also contains an expanded historical and philosophical introduction.
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This Element is an exposition of second- and higher-order logic and type theory. It begins with a presentation of the syntax and semantics of classical second-order logic, pointing up the contrasts with first-order logic. This leads to a discussion of higher-order logic based on the concept of a type. The second Section contains an account of the origins and nature of type theory, and its relationship to set theory. Section 3 introduces Local Set Theory (also known as higher-order intuitionistic logic), an important form of type theory based on intuitionistic logic. In Section 4 number of contemporary forms of type theory are described, all of which are based on the so-called 'doctrine of propositions as types'. We conclude with an Appendix in which the semantics for Local Set Theory - based on category theory - is outlined.
Logic, Symbolic and mathematical. --- Type theory. --- Set theory. --- Logic, Symbolic and mathematical --- Mathematics --- Algebra, Abstract --- Metamathematics --- Set theory --- Syllogism --- Algebra of logic --- Logic, Universal --- Mathematical logic --- Symbolic and mathematical logic --- Symbolic logic --- Aggregates --- Classes (Mathematics) --- Ensembles (Mathematics) --- Mathematical sets --- Sets (Mathematics) --- Theory of sets
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Set theory. --- Théorie des ensembles --- Forcing (Model theory) --- Forcing (mathématiques) --- Logique mathématique --- Théorie des modèles --- Algebres de boole --- Algebres de boole
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