In ZFC, is there a set of objects that satisfy x=x
93447
How is Russell’s Paradox equal to the universal set?
20140
Example of set which contains itself
61747
Proof of exchange principle in set theory
57021
Is the set of all functions $f:Z_+\rightarrow Z_+$ that are eventually constant countable.
130771
Sets and the principle of inclusion and exclusion
58602
In ZF, how would the structure of the cardinal numbers change by adopting this definition of cardinality?
3465
Equivalence relations and power sets.
133762
A set which satisfies all conditions for a Group except associativity
62936
Proving equivalencies of two versions of the Axiom of Choice
2342
How does equality $\mathfrak{m}^\mathfrak{m} = 2^\mathfrak{m}$ in $\sf{ZF}$ relate to the axiom of choice?
83757
Is the following equivalent to the axiom of choice?
30968
Is it possible that every set can be specified?
33661
Java: Is there an easy, quick way to AND, OR, or XOR together sets?
108045
Show that are logically equivalent
19414
Uncountable subset with uncountable complement, without the Axiom of Choice
12039
How to find an object with specific field values in a std::set?
3636
Are any two uncountable sets similar to each other?