Question

Does this elemental $G \times 2^G$ graph have a name?

score 39 · Answer 1 · 2018-06-12 17:28:37

39

Views

Does this elemental $G \times 2^G$ graph have a name?

Published on 12 Jun 2018 - 17:28

score 93 · Answer 2 · 2026-03-18 00:58:08

93

Views

Does $m*n \iff (m, n)=n$ define a partial order / an equivalence relation on $\{1,\ldots, 9\}$?

Published on 18 Mar 2026 - 0:58

score 30 · Answer 3 · 2018-06-13 12:52:39

30

Views

Proof involving relation properties

Published on 13 Jun 2018 - 12:52

score 480 · Answer 4 · 2018-06-13 17:06:32

480

Views

How to find the greatest and minimal element in the set of all transitive relations over $\{1,2,3,4\}$?

Published on 13 Jun 2018 - 17:06

score 447 · Answer 5 · 2018-06-14 22:45:33

447

Views

Properties of equality

Published on 14 Jun 2018 - 22:45

score 71 · Answer 6 · 2018-06-21 04:06:54

71

Views

Any uses for non-surjective relations (not just non-surjective functions)?

Published on 21 Jun 2018 - 4:06

score 43 · Answer 7 · 2018-06-22 14:24:10

43

Views

Prove the number of symmetric relation is $2^{\frac{n^2+n}{2}}$

Published on 22 Jun 2018 - 14:24

score 547 · Answer 8 · 2018-06-26 11:36:58

547

Views

How to prove that symmetric closure of reflexive closure is identical to reflexive closure of symmetric closure?

Published on 26 Jun 2018 - 11:36

score 1.2k · Answer 9 · 2018-06-26 17:03:18

1.2k

Views

Is there partial order over $\{1,2,3,4\}$ such that there're two maximal elements and one least element?

Published on 26 Jun 2018 - 17:03

score 96 · Answer 10 · 2018-06-27 12:05:57

96

Views

How to prove that if $R$ is the divisibility partial order over $S=\mathbb N-\{0,1\}$ then $RR^{-1}=S\times S$?

Published on 27 Jun 2018 - 12:05

score 59 · Answer 11 · 2018-06-27 17:11:24

59

Views

Relational Notations for "must be" and "occasionally"

Published on 27 Jun 2018 - 17:11

score 813 · Answer 12 · 2026-03-25 01:40:06

813

Views

What is the number of antisymmetric relations in a set where the relations of some elements are given?

Published on 25 Mar 2026 - 1:40

score 67 · Answer 13 · 2018-06-30 04:49:47

67

Views

Finding composition of relations specified in set builder form

Published on 30 Jun 2018 - 4:49

score 137 · Answer 14 · 2018-06-30 12:54:58

137

Views

What is the least and greatest element in symmetric but not reflexive relation over $\{1,2,3\}$?

Published on 30 Jun 2018 - 12:54

score 651 · Answer 15 · 2018-07-03 15:14:18

651

Views

Proof: If $R\subseteq S$ then $R^\subseteq S^,$ which $R,S$ are relations.

Published on 03 Jul 2018 - 15:14

List Question

Does this elemental $G \times 2^G$ graph have a name?

Does $m*n \iff (m, n)=n$ define a partial order / an equivalence relation on $\{1,\ldots, 9\}$?

Proof involving relation properties

How to find the greatest and minimal element in the set of all transitive relations over $\{1,2,3,4\}$?

Properties of equality

Any uses for non-surjective relations (not just non-surjective functions)?

Prove the number of symmetric relation is $2^{\frac{n^2+n}{2}}$

How to prove that symmetric closure of reflexive closure is identical to reflexive closure of symmetric closure?

Is there partial order over $\{1,2,3,4\}$ such that there're two maximal elements and one least element?

How to prove that if $R$ is the divisibility partial order over $S=\mathbb N-\{0,1\}$ then $RR^{-1}=S\times S$?

Relational Notations for "must be" and "occasionally"

What is the number of antisymmetric relations in a set where the relations of some elements are given?

Finding composition of relations specified in set builder form

What is the least and greatest element in symmetric but not reflexive relation over $\{1,2,3\}$?

Proof: If $R\subseteq S$ then $R^\subseteq S^,$ which $R,S$ are relations.

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