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Full Idea
The Peano-Russell notion of class is the 'logical' notion, where each collection is associated with some kind of definition or rule that characterises the members of the collection.
Gist of Idea
The 'logical' notion of class has some kind of definition or rule to characterise the class
Source
Shaughan Lavine (Understanding the Infinite [1994], IV.1)
Book Ref
Lavine,Shaughan: 'Understanding the Infinite' [Harvard 1994], p.63
9834 | A class is, for Frege, the extension of a concept [Frege, by Dummett] |
3328 | Frege proposed a realist concept of a set, as the extension of a predicate or concept or function [Frege, by Benardete,JA] |
21563 | The 'no classes' theory says the propositions just refer to the members [Russell] |
14461 | Propositions about classes can be reduced to propositions about their defining functions [Russell] |
11020 | Realisms like the full Comprehension Principle, that all good concepts determine sets [Read] |
15919 | The 'logical' notion of class has some kind of definition or rule to characterise the class [Lavine] |