$σ$-Relations, $σ$-functions and $σ$-antifunctions

Details $σ$-Relations, $σ$-functions and $σ$-antifunctions $σ$-Relations, $σ$-functions and $σ$-antifunctions

2009-07-06

arxiv.org/abs/0907.0820v4

Mathematics

Functional Analysis

Scientific paper

In this article we develop the concepts of $\sigma$-relation and $\sigma$-function, following the same steps as in Set Theory. First we define the concept of ordered pair and then we build the Cartesian Product of $\sigma$-sets so that we can define the concepts of $\sigma$-relation and $\sigma$-function. Now, as in $\sigma$-Set Theory there exist the concepts of $\sigma$-antielement and $\sigma$-antiset, we can build the new concepts of $\sigma$-antifunction, antidentity and antinverse. Finally, in the case that a $\sigma$-function $f:A\to B$ is bijective and there exist $A^{\st}$ and $B^{\st}$ $\sigma$-antiset of $A$ and $B$, we get 16 different $\sigma$-functions which are related in a diagram of $\sigma$-functions.

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