Question

Which of the following relations are functions from $A$ to itself?

score 150 · Answer 1 · 2015-08-18 12:21:26

150

Views

Which of the following relations are functions from $A$ to itself?

Published on 18 Aug 2015 - 12:21

score 44 · Answer 2 · 2015-08-18 15:16:32

44

Views

Relation and closure

Published on 18 Aug 2015 - 15:16

score 508 · Answer 3 · 2026-04-06 01:24:17

$(A,\leq)$ is a partially ordered set. That each finite non-empty subset of $A$ has a $maxB$ implies $(A,\leq)$ is totally ordered.

score 137 · Answer 4 · 2015-08-19 11:42:23

137

Views

Transitive relation that I don't understand

Published on 19 Aug 2015 - 11:42

score 1.4k · Answer 5 · 2026-04-06 01:25:58

1.4k

Views

$A$ is the power set of set $C$, and $S$ is the relation on $A$ defined by $x S y$ iff $x \subseteq y$.

Published on 06 Apr 2026 - 1:25

score 1.6k · Answer 6 · 2026-04-06 01:22:34

1.6k

Views

An example of a lattice that's not totally ordered

Published on 06 Apr 2026 - 1:22

score 1k · Answer 7 · 2015-08-20 14:43:59

1k

Views

Cardinality of a Quotient Set

Published on 20 Aug 2015 - 14:43

score 84 · Answer 8 · 2026-04-04 05:23:54

84

Views

Finding a unique relation $T$

Published on 04 Apr 2026 - 5:23

score 533 · Answer 9 · 2015-08-22 06:01:57

533

Views

The cardinality of the set all symmetric relations on the set of natural numbers is $\mathfrak{c} = | \mathbb{R} | = 2^{\aleph_0}$

Published on 22 Aug 2015 - 6:01

score 100 · Answer 10 · 2015-08-25 18:14:54

100

Views

Equivalence classes of relation $\rho: (x,y)\in \rho \Leftrightarrow (\exists k \in \mathbb{Z})x-y=3k$

Published on 25 Aug 2015 - 18:14

score 51 · Answer 11 · 2015-08-26 03:55:17

51

Views

Is this always true about symmetric relations?

Published on 26 Aug 2015 - 3:55

score 98 · Answer 12 · 2026-04-04 05:14:09

98

Views

Distinct elements of relations

Published on 04 Apr 2026 - 5:14

score 113 · Answer 13 · 2015-08-27 12:21:13

113

Views

how to define a function?

Published on 27 Aug 2015 - 12:21

score 68 · Answer 14 · 2015-08-30 17:54:00

68

Views

Is this relation considered antisymmetric and transitive?

Published on 30 Aug 2015 - 17:54

score 83 · Answer 15 · 2015-08-31 16:11:42

83

Views

How can you prove the equivalance relation for the following model?

Published on 31 Aug 2015 - 16:11

List Question

Which of the following relations are functions from $A$ to itself?

Relation and closure

$(A,\leq)$ is a partially ordered set. That each finite non-empty subset of $A$ has a $maxB$ implies $(A,\leq)$ is totally ordered.

Transitive relation that I don't understand

$A$ is the power set of set $C$, and $S$ is the relation on $A$ defined by $x S y$ iff $x \subseteq y$.

An example of a lattice that's not totally ordered

Cardinality of a Quotient Set

Finding a unique relation $T$

The cardinality of the set all symmetric relations on the set of natural numbers is $\mathfrak{c} = | \mathbb{R} | = 2^{\aleph_0}$

Equivalence classes of relation $\rho: (x,y)\in \rho \Leftrightarrow (\exists k \in \mathbb{Z})x-y=3k$

Is this always true about symmetric relations?

Distinct elements of relations

how to define a function?

Is this relation considered antisymmetric and transitive?

How can you prove the equivalance relation for the following model?

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