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Abstraction and Infinity

ISBN 9780198822684
Издатель Oxford University Press
Автор Paolo Mancosu
Язык English
Год издания 2019
Формат Paperback
Страницы 240
Вес (грамм) 360
Размер (мм) 233(д) х 155(ш) х 13(в)
Страна происхождения Соединенное Королевство

Paolo Mancosu provides an original investigation of historical and systematic aspects of the notions of abstraction and infinity and their interaction. A familiar way of introducing concepts in mathematics rests on so-called definitions by abstraction. An example of this is Hume's Principle, which introduces the concept of number by stating that two concepts have the same number if and only if the objects falling under each one of them can be put in one-one
correspondence. This principle is at the core of neo-logicism. 

In the first two chapters of the book, Mancosu provides a historical analysis of the mathematical uses and foundational discussion of definitions by abstraction up to Frege, Peano, and Russell. Chapter one shows that abstraction principles were quite widespread in the mathematical practice that preceded Frege's discussion of them and the second chapter provides the first contextual analysis of Frege's discussion of abstraction principles in section 64 of the Grundlagen. In the second part of
the book, Mancosu discusses a novel approach to measuring the size of infinite sets known as the theory of numerosities and shows how this new development leads to deep mathematical, historical, and philosophical problems. The final chapter of the book explore how this theory of numerosities can be
exploited to provide surprisingly novel perspectives on neo-logicism.
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