""Lambda theory: Introduction of a constant for" nothing" into set theory, a model of consistency and most noticeable conclusions

Logique Et Analyse 56 (222):165-181 (2013)
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Abstract
The purpose of this article is to present several immediate consequences of the introduction of a new constant called Lambda in order to represent the object ``nothing" or ``void" into a standard set theory. The use of Lambda will appear natural thanks to its role of condition of possibility of sets. On a conceptual level, the use of Lambda leads to a legitimation of the empty set and to a redefinition of the notion of set. It lets also clearly appear the distinction between the empty set, the nothing and the ur-elements. On a technical level, we introduce the notion of pre-element and we suggest a formal definition of the nothing distinct of that of the null-class. Among other results, we get a relative resolution of the anomaly of the intersection of a family free of sets and the possibility of building the empty set from ``nothing". The theory is presented with equi-consistency results . On both conceptual and technical levels, the introduction of Lambda leads to a resolution of the Russell's puzzle of the null-class
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Archival date: 2013-12-24
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Aftermath Of The Nothing.Laurent Dubois - 2017 - In J.-Y. Beziau, A. Costa-Leite & I. M. L. D’Ottaviano (eds.), CLE, v.81, Aftermath of the Logical Paradise. Rio de Janeiro, État de Rio de Janeiro, Brésil: pp. 93-124.

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