Question

What is the matrix and directed graph corresponding to the relation $\{(1, 1), (2, 2), (3, 3), (4, 4), (4, 3), (4, 1), (3, 2), (3, 1)\}$?

score 3.1k · Answer 1 · 2015-06-27 13:39:39

What is the matrix and directed graph corresponding to the relation $\{(1, 1), (2, 2), (3, 3), (4, 4), (4, 3), (4, 1), (3, 2), (3, 1)\}$?

score 213 · Answer 2 · 2015-06-27 19:05:39

213

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Binary Relations Counting

Published on 27 Jun 2015 - 19:05

score 71 · Answer 3 · 2026-03-29 07:34:44

71

Views

Graph, Relation $xRy \Leftrightarrow$ There is a path between $x$ and $y$ - symmetry

Published on 29 Mar 2026 - 7:34

score 1k · Answer 4 · 2015-06-28 00:14:03

1k

Views

Relation $R = \{(1,2), (2,2), (2,3), (3,2)\}$ is defined on $A = \{1,2,3\}$. Draw the digraph for the relation $R^3$.

Published on 28 Jun 2015 - 0:14

score 343 · Answer 5 · 2026-04-04 02:25:35

343

Views

Solve the relation with congruence

Published on 04 Apr 2026 - 2:25

score 489 · Answer 6 · 2015-07-06 06:13:31

489

Views

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Published on 06 Jul 2015 - 6:13

score 39 · Answer 7 · 2015-07-06 14:06:01

39

Views

Book on theory of relations

Published on 06 Jul 2015 - 14:06

score 360 · Answer 8 · 2026-03-26 09:40:01

360

Views

composition of relations and multiset relations

Published on 26 Mar 2026 - 9:40

score 105 · Answer 9 · 2026-04-04 02:33:48

105

Views

$f : A \to B$ s.t. for all $x, y \in A, x R y \iff f(x) S f(y)$

Published on 04 Apr 2026 - 2:33

score 1.6k · Answer 10 · 2026-03-25 16:02:54

1.6k

Views

Sum of a product of four Kronecker Deltas

Published on 25 Mar 2026 - 16:02

score 63 · Answer 11 · 2026-04-04 03:58:08

63

Views

Is there a term for irreflexive relations whose reflexive closures are equivalence relations?

Published on 04 Apr 2026 - 3:58

score 45 · Answer 12 · 2015-07-15 13:59:53

Prove or disprove: $\forall\rho,\sigma,\phi\subseteq A^2: \ \rho \subseteq \sigma \rightarrow \rho \circ \phi \subseteq \sigma \circ \phi$

score 304 · Answer 13 · 2026-04-04 03:52:31

304

Views

Ternary equivalence relations that are not equivalent to some binary equivalance

Published on 04 Apr 2026 - 3:52

score 147 · Answer 14 · 2015-07-16 20:30:35

147

Views

What does the notation $M^{[2]}$ mean with regards to matrices?

Published on 16 Jul 2015 - 20:30

score 89 · Answer 15 · 2015-07-19 19:30:45

89

Views

Define a relation $M$ on $\mathbb{Z} \times \mathbb{Z}$...

Published on 19 Jul 2015 - 19:30

List Question

What is the matrix and directed graph corresponding to the relation $\{(1, 1), (2, 2), (3, 3), (4, 4), (4, 3), (4, 1), (3, 2), (3, 1)\}$?

Binary Relations Counting

Graph, Relation $xRy \Leftrightarrow$ There is a path between $x$ and $y$ - symmetry

Relation $R = \{(1,2), (2,2), (2,3), (3,2)\}$ is defined on $A = \{1,2,3\}$. Draw the digraph for the relation $R^3$.

Solve the relation with congruence

Transitive relations on sets

Book on theory of relations

composition of relations and multiset relations

$f : A \to B$ s.t. for all $x, y \in A, x R y \iff f(x) S f(y)$

Sum of a product of four Kronecker Deltas

Is there a term for irreflexive relations whose reflexive closures are equivalence relations?

Prove or disprove: $\forall\rho,\sigma,\phi\subseteq A^2: \ \rho \subseteq \sigma \rightarrow \rho \circ \phi \subseteq \sigma \circ \phi$

Ternary equivalence relations that are not equivalent to some binary equivalance

What does the notation $M^{[2]}$ mean with regards to matrices?

Define a relation $M$ on $\mathbb{Z} \times \mathbb{Z}$...

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