In this form the axiom permits only the introduction of such sets as are subsets of sets previously introduced; if one wishes to operate with other sets, their existence must be explicitly postulated. Since however in order to accomplish anything at all... Bulletin of the American Mathematical Society - Page 78by American Mathematical Society - 1914Full view - About this book
| Paul Benacerraf, Hilary Putnam - 1983 - 604 pages
...postulated at the outset, the only valid argument that can be brought against the introduction of anew set is that it leads to contradictions; indeed the...the impassable chasm which separates the two sides. Two sets are said to possess the same potency, or power, if their elements can be brought into one-to-one... | |
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