Toposes Triples And Theories
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Toposes Triples and Theories
Author | : Michael Barr,Charles Wells |
Publsiher | : Unknown |
Total Pages | : 380 |
Release | : 1985 |
Genre | : Categories (Mathematics) |
ISBN | : UCAL:B4497477 |
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Toposes Triples and Theories
Author | : M. Barr,C. Wells |
Publsiher | : Unknown |
Total Pages | : 364 |
Release | : 2014-01-15 |
Genre | : Electronic Book |
ISBN | : 1489900225 |
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Toposes and Local Set Theories
Author | : John L. Bell |
Publsiher | : Courier Corporation |
Total Pages | : 290 |
Release | : 2008-01-01 |
Genre | : Mathematics |
ISBN | : 9780486462868 |
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This text introduces topos theory, a development in category theory that unites important but seemingly diverse notions from algebraic geometry, set theory, and intuitionistic logic. Topics include local set theories, fundamental properties of toposes, sheaves, local-valued sets, and natural and real numbers in local set theories. 1988 edition.
Sketches of an Elephant A Topos Theory Compendium
Author | : P. T. Johnstone |
Publsiher | : Oxford University Press |
Total Pages | : 836 |
Release | : 2002-09-12 |
Genre | : Computers |
ISBN | : 0198515987 |
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Topos Theory is a subject that stands at the junction of geometry, mathematical logic and theoretical computer science, and it derives much of its power from the interplay of ideas drawn from these different areas. Because of this, an account of topos theory which approaches the subject from one particular direction can only hope to give a partial picture; the aim of this compendium is to present as comprehensive an account as possible of all the main approaches and to thereby demonstrate the overall unity of the subject. The material is organized in such a way that readers interested in following a particular line of approach may do so by starting at an appropriate point in the text.
Topos Theory
Author | : P.T. Johnstone |
Publsiher | : Courier Corporation |
Total Pages | : 400 |
Release | : 2014-01-15 |
Genre | : Mathematics |
ISBN | : 9780486493367 |
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Focusing on topos theory's integration of geometric and logical ideas into the foundations of mathematics and theoretical computer science, this volume explores internal category theory, topologies and sheaves, geometric morphisms, and other subjects. 1977 edition.
Higher Topos Theory AM 170
Author | : Jacob Lurie |
Publsiher | : Princeton University Press |
Total Pages | : 944 |
Release | : 2009-07-06 |
Genre | : Mathematics |
ISBN | : 9781400830558 |
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Higher category theory is generally regarded as technical and forbidding, but part of it is considerably more tractable: the theory of infinity-categories, higher categories in which all higher morphisms are assumed to be invertible. In Higher Topos Theory, Jacob Lurie presents the foundations of this theory, using the language of weak Kan complexes introduced by Boardman and Vogt, and shows how existing theorems in algebraic topology can be reformulated and generalized in the theory's new language. The result is a powerful theory with applications in many areas of mathematics. The book's first five chapters give an exposition of the theory of infinity-categories that emphasizes their role as a generalization of ordinary categories. Many of the fundamental ideas from classical category theory are generalized to the infinity-categorical setting, such as limits and colimits, adjoint functors, ind-objects and pro-objects, locally accessible and presentable categories, Grothendieck fibrations, presheaves, and Yoneda's lemma. A sixth chapter presents an infinity-categorical version of the theory of Grothendieck topoi, introducing the notion of an infinity-topos, an infinity-category that resembles the infinity-category of topological spaces in the sense that it satisfies certain axioms that codify some of the basic principles of algebraic topology. A seventh and final chapter presents applications that illustrate connections between the theory of higher topoi and ideas from classical topology.
Theory and Applications of Ontology Computer Applications
Author | : Roberto Poli,Michael Healy,Achilles Kameas |
Publsiher | : Springer Science & Business Media |
Total Pages | : 576 |
Release | : 2010-09-02 |
Genre | : Philosophy |
ISBN | : 9789048188475 |
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Ontology was once understood to be the philosophical inquiry into the structure of reality: the analysis and categorization of ‘what there is’. Recently, however, a field called ‘ontology’ has become part of the rapidly growing research industry in information technology. The two fields have more in common than just their name. Theory and Applications of Ontology is a two-volume anthology that aims to further an informed discussion about the relationship between ontology in philosophy and ontology in information technology. It fills an important lacuna in cutting-edge research on ontology in both fields, supplying stage-setting overview articles on history and method, presenting directions of current research in either field, and highlighting areas of productive interdisciplinary contact. Theory and Applications of Ontology: Computer Applications presents ontology in ways that philosophers are not likely to find elsewhere. The volume offers an overview of current research in ontology, distinguishing basic conceptual issues, domain applications, general frameworks, and mathematical formalisms. It introduces the reader to current research on frameworks and applications in information technology in ways that are sure to invite reflection and constructive responses from ontologists in philosophy.
Elementary Categories Elementary Toposes
Author | : Colin McLarty |
Publsiher | : Clarendon Press |
Total Pages | : 282 |
Release | : 1992-06-04 |
Genre | : Electronic Book |
ISBN | : 9780191589492 |
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The book covers elementary aspects of category theory and topos theory. It has few mathematical prerequisites, and uses categorical methods throughout rather than beginning with set theoretic foundations. It works with key notions such as cartesian closedness, adjunctions, regular categories, and the internal logic of a topos. Full statements and elementary proofs are given for the central theorems, including the fundamental theorem of toposes, the sheafification theorem, and the construction of Grothendieck toposes over any topos as base. Three chapters discuss applications of toposes in detail, namely to sets, to basic differential geometry, and to recursive analysis. - ;Introduction; PART I: CATEGORIES: Rudimentary structures in a category; Products, equalizers, and their duals; Groups; Sub-objects, pullbacks, and limits; Relations; Cartesian closed categories; Product operators and others; PART II: THE CATEGORY OF CATEGORIES: Functors and categories; Natural transformations; Adjunctions; Slice categories; Mathematical foundations; PART III: TOPOSES: Basics; The internal language; A soundness proof for topos logic; From the internal language to the topos; The fundamental theorem; External semantics; Natural number objects; Categories in a topos; Topologies; PART IV: SOME TOPOSES: Sets; Synthetic differential geometry; The effective topos; Relations in regular categories; Further reading; Bibliography; Index. -