Set Theory and Logic

1310 Submissions

[2] viXra:1310.0221 [pdf] submitted on 2013-10-24 16:37:16

The Characteristic Function of a Neutrosophic Set

Authors: A. A. Salama, Mohamed eisa, Florentin Smarandache
Comments: 1 Page.

The purpose of this paper is to introduce and study the characteristic function of a neutrosophic set. After given the fundamental definitions of neutrosophic set operations generated by, we obtain several properties, and discussed the relationship between neutrosophic sets generated by Ng and others. Finally, we introduce the neutrosophic topological spaces generated by Ng . Possible application to GIS topology rules are touched upon.
Category: Set Theory and Logic

[1] viXra:1310.0075 [pdf] replaced on 2019-10-25 17:00:34

The Continuum Hypotheses

Authors: Daniel Cordero Grau
Comments: 2 Pages.

In this paper I prove the continuum hypothesis by categorical logic, proving that the theory of initial ordinals and the theory of cardinals are isomorphic. To prove that since isomorphic structures are isomorphic theories by the fundamental theorem of mathematical logic, we use the definition of a theory, the definition of an isomorphism of structures in its equivalent categorical form, the definition of an isomorphism of categories, the definition of a structure, the definition of a formal language, the definition of a functor, the definition of a category, the axioms of mathematical logic and the axioms of the theory of categories
Category: Set Theory and Logic