# Questions Tagged with "elementary set theory"

Explore solved questions tagged with "elementary set theory" or help others by answering their unsolved questions related to "elementary set theory".

## $(A^ctimes B)cup(Atimes B^c)cup(A^c times B^c)=(A^ctimes Y)cup(Xtimes B^c)$

Mathematics Asked 2 years ago by Yahya B. Jaber

## Existance and example of extraordinary set and set of all such extraordinary sets in the context of Russels paradox

Mathematics Asked 2 years ago by Nascimento de Cos

## Inverse of stereographic projection

Mathematics Asked 2 years ago by Thoth

## Question on cardinality of sets

Mathematics Asked 2 years ago by jshthng

## Suppose $A , B , C$ are arbitrary sets and we know that $( A times B ) cap ( C times D ) = emptyset$ What conclusion can we draw?

Mathematics Asked 2 years ago by Anonymous Molecule

## Is a convex set of permutation matrices $ntimes n$ ($mathbb{P}_{n}cap mathbb{C}$) a singleton?

Mathematics Asked 2 years ago by Joey Cho

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