{"product_id":"parts-of-classes-9780631176565","title":"Parts of Classes","description":"\u003cdiv class=\"book-description\"\u003e\n\u003cp\u003e\u003cstrong\u003eParts of Classes\u003c\/strong\u003e by Lewis, David K.. paperback edition. ISBN: 9780631176565.\u003c\/p\u003e\n\u003cp\u003eDoes the notion of part and whole have any application to classes? Lewis argues that it does, and that the smallest parts of any class are its one-membered \"singleton\" subclasses. That results in a reconception of set theory. The set-theoretical making of one out of many is just the composition of one whole out of many parts. But first, one singleton must be made out of its one member - this is the distinctively set-theoretical primitive operation. Thus set theory is entangled, with mereology: the theory of parts and wholes.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Wiley-Blackwell","offers":[{"title":"Default Title","offer_id":44945974984757,"sku":"ByrdShop_063117656X","price":169.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0627\/8139\/0901\/files\/9780631176565_e0fb587d-70eb-4bef-afc2-db22bf242dc1.jpg?v=1778908363","url":"https:\/\/atxbooks.com\/products\/parts-of-classes-9780631176565","provider":"ATX Books","version":"1.0","type":"link"}