Prove that R is an equivalence relation on S.
89506
Union of disjoint sets : Equivalence relations
17363
Prove that the intersection of two equivalence relations is an equivalence relation.
87265
If $(A-\lambda{I})$ is $\lambda$-equivalent to $(B-\lambda{I})$ then $A$ is similar to $B$
115663
Proving an isomorphism using the isomorphism theorems
61103
Prove that $\mathbb{|Q| = |Q\times Q|}$
152838
Relation between Ramsey Numbers: $R(s, t) > (t-1)(s-1)$
85507
Equivalence Relation problem
136883
The class of equivalence.
14986
Proving a combinatorics equality: $\binom{r}{r} + \binom{r+1}{r} + \cdots + \binom{n}{r} = \binom{n+1}{r+1}$
87955
How to prove that $P \rightarrow Q$ is equivalent with $\neg P \lor Q $?
99911
How to show that if $x=(p,q)$ and $y=(p',q')$ then $x \sim y $ if $pq'=p'q$ is an equivalence relation?
84397
$x$ conjugate to $y$ in a group $G$ is an equivalence relation on $G$
69043
The equivalence relation generated by a relation
13253
Prove $f(S \cup T) = f(S) \cup f(T)$
140335
Prove that the empty relation is Transitive, Symmetric but not Reflexive
108045
Show that are logically equivalent
98518
Cardinality of equivalence relations on N