Symmetric relation on set
60140
Proof of Equivalence Relation $R=\{(a,b)\in\Bbb N^2: 5\mid (2a+3b)\}$
45878
Elementary Set Theory: Ordinals, Well Orderings and Isomorphisms
74114
How to find the number of anti-symmetric relations?
121593
Symmetric and exterior power of representation
85507
Equivalence Relation problem
111032
Proof of Sets involving the Cartesian Product
56370
Associative operation on a set $S$
63184
symmetric functions vs symmetric polynomials
65910
Reflexivity of equivalence relations
87830
Relating the union of the power set of a set to the set itself
88982
Prove that for any two sets $A$ and $B$, $A\notin B$ or $B\notin A$
104274
Express $C$ interms of the sets $A_n$
98518
Cardinality of equivalence relations on N
21568
Maximal order of an element in a symmetric group
130771
Sets and the principle of inclusion and exclusion
123613
Double Complement of a set proof
70143
Mutually exclusive countable subsets of a countable set