Finding equivalence classes of an equivalence relation defined on a powerset, defined by XSY if and only if |X| ≡ |Y| (mod 2)
125077
what is the absolute value of a set?
12459
Associativity of symmetric difference of sets
43655
Verify is tautology by using logical equivalence
33064
Powerset of set with empty sets
53915
prove that $a \equiv b \mod m$ is an equivalence relation on the integers
113065
Proving equivalences of statements equivalent to AC
74455
Can a single sentence be used to distinguish between isomorphic classes of finite structures?
77791
Proving an inclusion related to algebraic sets and interpreting it
20615
How many Nerode equivalence classes does the language $x\neq y$ have?
31392
Examples and Counterexamples of Relations which Satisfy Certain Properties
23521
Power Set of $X$ is a Ring with Symmetric Difference, and Intersection
131155
$x\sim y\iff x^2\equiv y^2\pmod{\!6}$ is an equivalence relation.
84397
$x$ conjugate to $y$ in a group $G$ is an equivalence relation on $G$
127596
Composition of equivalence relations
64372
Do the isomorphism's of groups form an equivalence relation on the class of all groups?
51695
Finding all homomorphisms between $\mathbb{Z}/m\mathbb{Z}$ and $\mathbb{Z}/n\mathbb{Z}$
65910
Reflexivity of equivalence relations