Question

Number of relations on 6 element set which are both symmetric and reflexive but not anti-symmetric.

score 167 · Answer 1 · 2018-12-15 14:15:15

167

Views

Number of relations on 6 element set which are both symmetric and reflexive but not anti-symmetric.

Published on 15 Dec 2018 - 14:15

score 85 · Answer 2 · 2026-03-25 20:34:14

85

Views

Canonical factorization of a certain function

Published on 25 Mar 2026 - 20:34

score 214 · Answer 3 · 2026-03-22 04:07:24

214

Views

Equivalence relations and their classes

Published on 22 Mar 2026 - 4:07

score 48 · Answer 4 · 2018-12-16 12:50:36

48

Views

Equivalence relation! Make formula saying that R is not an equivalence relation

Published on 16 Dec 2018 - 12:50

score 58 · Answer 5 · 2026-03-25 05:14:14

58

Views

Discrete mathematics, defining (+, *) operations on a equivalence relations.

Published on 25 Mar 2026 - 5:14

score 46 · Answer 6 · 2018-12-16 17:43:08

46

Views

Given two posets $\preccurlyeq$, prove that the following relation $R$ using both of them is transitive

Published on 16 Dec 2018 - 17:43

score 143 · Answer 7 · 2026-03-25 13:51:42

143

Views

Prove that $R\subseteq X\times X$ is an equivalence relation and construct its equivalence class

Published on 25 Mar 2026 - 13:51

score 141 · Answer 8 · 2026-03-25 09:27:28

141

Views

Set membership and a box of bananas

Published on 25 Mar 2026 - 9:27

score 31 · Answer 9 · 2018-12-20 17:56:17

31

Views

How do I precisely characterise this "extension" of transitivity?

Published on 20 Dec 2018 - 17:56

score 1k · Answer 10 · 2018-12-30 09:43:52

1k

Views

Equivalence relation and a function

Published on 30 Dec 2018 - 9:43

score 170 · Answer 11 · 2026-03-25 10:53:03

170

Views

Is a set together with an operation always a relational structure?

Published on 25 Mar 2026 - 10:53

score 175 · Answer 12 · 2018-12-31 19:41:53

175

Views

Relation induced topology

Published on 31 Dec 2018 - 19:41

score 1.3k · Answer 13 · 2018-12-31 22:10:03

1.3k

Views

Number of relations on a set of $n$ elements

Published on 31 Dec 2018 - 22:10

score 295 · Answer 14 · 2019-01-02 07:37:42

295

Views

Order properties of the empty relation on the empty set, and a related question

Published on 02 Jan 2019 - 7:37

score 88 · Answer 15 · 2026-03-26 14:40:38

88

Views

Direct mapping and inverse mapping: when they can be equal?

Published on 26 Mar 2026 - 14:40

List Question

Number of relations on 6 element set which are both symmetric and reflexive but not anti-symmetric.

Canonical factorization of a certain function

Equivalence relations and their classes

Equivalence relation! Make formula saying that R is not an equivalence relation

Discrete mathematics, defining (+, *) operations on a equivalence relations.

Given two posets $\preccurlyeq$, prove that the following relation $R$ using both of them is transitive

Prove that $R\subseteq X\times X$ is an equivalence relation and construct its equivalence class

Set membership and a box of bananas

How do I precisely characterise this "extension" of transitivity?

Equivalence relation and a function

Is a set together with an operation always a relational structure?

Relation induced topology

Number of relations on a set of $n$ elements

Order properties of the empty relation on the empty set, and a related question

Direct mapping and inverse mapping: when they can be equal?

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