New Approaches to Classes and Concepts » książka
New Approaches to Classes and Concepts
ISBN-13: 9781904987857 / Angielski / Miękka / 2008 / 196 str.
Classifying objects --- thus collecting them into classes --- is an operation both fundamental and common in everyday life as well as in scientific endeavours. Logic, philosophy, mathematics and computer science analyse this activity by means of such notions as class', set', and type'. Furthermore, according to the so-called logical (or naive) conception of classes," these notions are related to the notion concept' in that classes are considered extensions' of concepts. This relationship, however, is a delicate one --- as we have learned from the paradoxes of class theory. The contributions to this volume shed new light both on concepts and classes and their delicate relationship. New and original approaches to these issues (e.g., map theory, epsilon-sets, intensional type theory, AFA set theory) are presented and discussed in the broader context of their application to problems from informatics and linguistics. The focus is on such matters as unrestrictive comprehension, extensionality, the relationship between the notions of concept, class and extension, and on unfounded (circular and infinitely descending) patterns of elementhood. These and related problems have always played a role in the development of set theory and have always delivered motivation for the development of unorthodox views and theories. This is also demonstrated in this volume by contributions dealing with the history of Zermelo's axiomatization of set theory and Ackermann's class theory with unrestrictive comprehension, respectively. The contributions of this volume are based on the presentation at a Workshop on Alternative Set Theories --- Alternatives to Set Theory" held at the University of Southern Denmark in 2006.
Classifying objects --- thus collecting them into classes --- is anoperation both fundamental and common in everyday life as well as inscientific endeavours. Logic, philosophy, mathematics and computerscience analyse this activity by means of such notions as `class,`set, and `type. Furthermore, according to the so-called ``logical(or naive) conception of classes", these notions are related to thenotion `concept in that classes are considered `extensions ofconcepts. This relationship, however, is a delicate one --- as wehave learned from the paradoxes of class theory. The contributions tothis volume shed new light both on concepts and classes and theirdelicate relationship. New and original approaches to these issues(e.g., map theory, epsilon-sets, intensional type theory, AFA settheory) are presented and discussed in the broader context of theirapplication to problems from informatics and linguistics. The focus ison such matters as unrestrictive comprehension, extensionality, therelationship between the notions of concept, class and extension, andon unfounded (circular and infinitely descending) patterns ofelementhood. These and related problems have always played a role inthe development of set theory and have always delivered motivation forthe development of unorthodox views and theories. This is alsodemonstrated in this volume by contributions dealing with the historyof Zermelos axiomatization of set theory and Ackermanns class theorywith unrestrictive comprehension, respectively.The contributions of this volume are based on the presentation at aWorkshop on ``Alternative Set Theories --- Alternatives to Set Theory"held at the University of Southern Denmark in 2006.
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