Equivalence relation/classes
1704
Define a relation and find its equivalence classes.
35362
Number of equivalence relations on a set
15626
Relations of a~b iff b = ak^2
8627
Number of equivalence classes of $w \times h$ matrices under switching rows and columns
15312
Show that $R \cap R^{−1}$ is an equivalence relation on $X$?
33702
Is this an isomorphism possible?
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?
122506
Relation on countable sets
97127
Made one instance of a class equal to another. – How to cancel that?
77391
How to implement a super class, sub class relationship in the database?
113065
Proving equivalences of statements equivalent to AC
10858
Why isn't reflexivity redundant in the definition of equivalence relation?
62455
Prove Equivalence Relation in G
129062
Distinguishing definitions from equivalences.
57466
Reflexive and relation
17363
Prove that the intersection of two equivalence relations is an equivalence relation.
66548
proving topological equivalence