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Questions Tagged with "elementary set theory" (Page 2)

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

$f^{*}$ is surjective if and only if $f$ is injective

2 answer

Mathematics Asked 2 years ago by Air Mike

How to use general recursion to generate a set of words?

2 answer

Mathematics Asked 2 years ago by Pwelb

Bijection of a Generalised Cartesian Product

1 answer

Mathematics Asked 2 years ago

Prove that $a ⊈ {a}$, where $a$ is non-empty

1 answer

Mathematics Asked 2 years ago by Galaxylokka

Finite Sets, Equal Cardinality, Injective $iff$ Surjective.

3 answer

Mathematics Asked 2 years ago by JacobCheverie

Prove $A setminus (A setminus (A setminus B)) = A setminus B.$

2 answer

Mathematics Asked 2 years ago by hk1510

Cardinality of set of $a_r$?

1 answer

Mathematics Asked 2 years ago

Example where an inverse function does not equal the elements

2 answer

Mathematics Asked 3 years ago by MC5555

A little help with elementary set intuition, specifically on intersection

2 answer

Mathematics Asked 3 years ago by Stephan Psaras

How to solve set theory equation question

1 answer

Mathematics Asked 3 years ago

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