A Functorial Model Theory PDF Download
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Author | : Cyrus F. Nourani |
Publisher | : CRC Press |
Total Pages | : 296 |
Release | : 2016-04-19 |
Genre | : Mathematics |
ISBN | : 1482231506 |
Download A Functorial Model Theory Book in PDF, ePub and Kindle
This book is an introduction to a functorial model theory based on infinitary language categories. The author introduces the properties and foundation of these categories before developing a model theory for functors starting with a countable fragment of an infinitary language. He also presents a new technique for generating generic models with categories by inventing infinite language categories and functorial model theory. In addition, the book covers string models, limit models, and functorial models.
Author | : Alexander Martsinkovsky |
Publisher | : Springer Nature |
Total Pages | : 256 |
Release | : |
Genre | : |
ISBN | : 3031530632 |
Download Functor Categories, Model Theory, Algebraic Analysis and Constructive Methods Book in PDF, ePub and Kindle
Author | : Mike Prest |
Publisher | : American Mathematical Soc. |
Total Pages | : 122 |
Release | : 2011-02-07 |
Genre | : Mathematics |
ISBN | : 0821847678 |
Download Definable Additive Categories: Purity and Model Theory Book in PDF, ePub and Kindle
Most of the model theory of modules works, with only minor modifications, in much more general additive contexts (such as functor categories, categories of comodules, categories of sheaves). Furthermore, even within a given category of modules, many subcategories form a ``self-sufficient'' context in which the model theory may be developed without reference to the larger category of modules. The notion of a definable additive category covers all these contexts. The (imaginaries) language which one uses for model theory in a definable additive category can be obtained from the category (of structures and homomorphisms) itself, namely, as the category of those functors to the category of abelian groups which commute with products and direct limits. Dually, the objects of the definable category--the modules (or functors, or comodules, or sheaves)--to which that model theory applies may be recovered as the exact functors from the, small abelian, category (the category of pp-imaginaries) which underlies that language.
Author | : Mark Hovey |
Publisher | : American Mathematical Soc. |
Total Pages | : 229 |
Release | : 2007 |
Genre | : Mathematics |
ISBN | : 0821843613 |
Download Model Categories Book in PDF, ePub and Kindle
Model categories are used as a tool for inverting certain maps in a category in a controllable manner. They are useful in diverse areas of mathematics. This book offers a comprehensive study of the relationship between a model category and its homotopy category. It develops the theory of model categories, giving a development of the main examples.
Author | : Emily Riehl |
Publisher | : Cambridge University Press |
Total Pages | : 371 |
Release | : 2014-05-26 |
Genre | : Mathematics |
ISBN | : 1139952633 |
Download Categorical Homotopy Theory Book in PDF, ePub and Kindle
This book develops abstract homotopy theory from the categorical perspective with a particular focus on examples. Part I discusses two competing perspectives by which one typically first encounters homotopy (co)limits: either as derived functors definable when the appropriate diagram categories admit a compatible model structure, or through particular formulae that give the right notion in certain examples. Emily Riehl unifies these seemingly rival perspectives and demonstrates that model structures on diagram categories are irrelevant. Homotopy (co)limits are explained to be a special case of weighted (co)limits, a foundational topic in enriched category theory. In Part II, Riehl further examines this topic, separating categorical arguments from homotopical ones. Part III treats the most ubiquitous axiomatic framework for homotopy theory - Quillen's model categories. Here, Riehl simplifies familiar model categorical lemmas and definitions by focusing on weak factorization systems. Part IV introduces quasi-categories and homotopy coherence.
Author | : Cyrus F. Nourani |
Publisher | : CRC Press |
Total Pages | : 304 |
Release | : 2016-02-24 |
Genre | : Mathematics |
ISBN | : 1771882484 |
Download Algebraic Computability and Enumeration Models Book in PDF, ePub and Kindle
This book, Algebraic Computability and Enumeration Models: Recursion Theory and Descriptive Complexity, presents new techniques with functorial models to address important areas on pure mathematics and computability theory from the algebraic viewpoint. The reader is first introduced to categories and functorial models, with Kleene algebra examples
Author | : Philip S. Hirschhorn |
Publisher | : American Mathematical Soc. |
Total Pages | : 482 |
Release | : 2003 |
Genre | : Mathematics |
ISBN | : 0821849174 |
Download Model Categories and Their Localizations Book in PDF, ePub and Kindle
The aim of this book is to explain modern homotopy theory in a manner accessible to graduate students yet structured so that experts can skip over numerous linear developments to quickly reach the topics of their interest. Homotopy theory arises from choosing a class of maps, called weak equivalences, and then passing to the homotopy category by localizing with respect to the weak equivalences, i.e., by creating a new category in which the weak equivalences are isomorphisms. Quillen defined a model category to be a category together with a class of weak equivalences and additional structure useful for describing the homotopy category in terms of the original category. This allows you to make constructions analogous to those used to study the homotopy theory of topological spaces. A model category has a class of maps called weak equivalences plus two other classes of maps, called cofibrations and fibrations. Quillen's axioms ensure that the homotopy category exists and that the cofibrations and fibrations have extension and lifting properties similar to those of cofibration and fibration maps of topological spaces. During the past several decades the language of model categories has become standard in many areas of algebraic topology, and it is increasingly being used in other fields where homotopy theoretic ideas are becoming important, including modern algebraic $K$-theory and algebraic geometry. All these subjects and more are discussed in the book, beginning with the basic definitions and giving complete arguments in order to make the motivations and proofs accessible to the novice. The book is intended for graduate students and research mathematicians working in homotopy theory and related areas.
Author | : Piotr Kossowski |
Publisher | : |
Total Pages | : 0 |
Release | : 1974 |
Genre | : Mathematical models |
ISBN | : |
Download A Functorial Formulation of Models of First Order Theories Book in PDF, ePub and Kindle
Author | : Mihály Makkai |
Publisher | : American Mathematical Soc. |
Total Pages | : 186 |
Release | : 1989 |
Genre | : Mathematics |
ISBN | : 082185111X |
Download Accessible Categories: The Foundations of Categorical Model Theory Book in PDF, ePub and Kindle
Intended for category theorists and logicians familiar with basic category theory, this book focuses on categorical model theory, which is concerned with the categories of models of infinitary first order theories, called accessible categories. The starting point is a characterization of accessible categories in terms of concepts familiar from Gabriel-Ulmer's theory of locally presentable categories. Most of the work centers on various constructions (such as weighted bilimits and lax colimits), which, when performed on accessible categories, yield new accessible categories. These constructions are necessarily 2-categorical in nature; the authors cover some aspects of 2-category theory, in addition to some basic model theory, and some set theory. One of the main tools used in this study is the theory of mixed sketches, which the authors specialize to give concrete results about model theory. Many examples illustrate the extent of applicability of these concepts. In particular, some applications to topos theory are given. Perhaps the book's most significant contribution is the way it sets model theory in categorical terms, opening the door for further work along these lines. Requiring a basic background in category theory, this book will provide readers with an understanding of model theory in categorical terms, familiarity with 2-categorical methods, and a useful tool for studying toposes and other categories.
Author | : Cyrus F. Nourani |
Publisher | : Apple Academic Press |
Total Pages | : 0 |
Release | : 2015-11-30 |
Genre | : Mathematics |
ISBN | : 9781771882477 |
Download Algebraic Computability and Enumeration Models Book in PDF, ePub and Kindle
This book, Algebraic Computability and Enumeration Models: Recursion Theory and Descriptive Complexity, presents new techniques with functorial models to address important areas on pure mathematics and computability theory from the algebraic viewpoint. The reader is first introduced to categories and functorial models, with Kleene algebra examples for languages. Functorial models for Peano arithmetic are described toward important computational complexity areas on a Hilbert program, leading to computability with initial models. Infinite language categories are also introduced to explain descriptive complexity with recursive computability with admissible sets and urelements. Algebraic and categorical realizability is staged on several levels, addressing new computability questions with omitting types realizably. Further applications to computing with ultrafilters on sets and Turing degree computability are examined. Functorial models computability is presented with algebraic trees realizing intuitionistic types of models. New homotopy techniques are applied to Marin Lof types of computations with model categories. Functorial computability, induction, and recursion are examined in view of the above, presenting new computability techniques with monad transformations and projective sets. This informative volume will give readers a complete new feel for models, computability, recursion sets, complexity, and realizability. This book pulls together functorial thoughts, models, computability, sets, recursion, arithmetic hierarchy, filters, with real tree computing areas, presented in a very intuitive manner for university teaching, with exercises for every chapter. The book will also prove valuable for faculty in computer science and mathematics.