“ Perfectly Understood , Unproblematic , and Certain ” : Lewis on Mereology
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, and Certain ” : Lewis on Mereology
David Lewis famously takes mereology " to be perfectly understood, unproblematic, and certain " (1991, 75). It is central to his thought, appearing in his discussions of set theory, modality, vagueness, structural universals, and elsewhere. He held views not only about how composition works and when it occurs, but also about the role of mereology in philosophy. In this essay, I will proceed by ...
متن کاملFour Theses on the Alleged Innocence of Mereology*
In Parts of Classes David Lewis attempts to draw a sharp contrast between mereology and set theory and he tries to assimilate mereology to logic. For him, like logic but unlike set theory, mereology is “ontologically innocent”. In mereology, given certain objects, no further ontological commitment is required for the existence of their sum. On the contrary, by accepting set theory, given certai...
متن کاملOn the Ontological Commitment of Mereology
In Parts of Classes (1991) and Mathematics Is Megethology (1993) David Lewis defends both the innocence of plural quantification and of mereology. However, he himself claims that the innocence of mereology is different from that of plural reference, where reference to some objects does not require the existence of a single entity picking them out as a whole. In the case of plural quantification...
متن کاملLewis on Set Theory
henceforth PC) undertakes a fundamental re-examination of the relationship between merelogy, the general theory of parts, and set theory, the general theory of collections. He assumes a certain minimum background familiarity with both subjects, and limitations of space make the same assumption inevitable in the present account. Varzi (2011) is recommended as a clear, concise survey of mereology...
متن کاملOn the Infinite in Mereology with Plural Quantification
In “Mathematics is megethology,” Lewis reconstructs set theory using mereology and plural quantification (MPQ). In his recontruction he assumes from the beginning that there is an infinite plurality of atoms, whose size is equivalent to that of the set theoretical universe. Since this assumption is far beyond the basic axioms of mereology, it might seem that MPQ do not play any role in order to...
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تاریخ انتشار 2013