List questions from relations

Published on 25 Sep 2015 - 12:08

218

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all subsets of R are reflexive?

Published on 25 Sep 2015 - 16:26

238

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number of relations when set is simultaneously reflexive and symmetric

Published on 25 Sep 2015 - 21:03

1.9k

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Discrete Math Equivalence Relation

Published on 25 Sep 2015 - 23:54

182

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Discrete mathematics set relations anti symmetric

Published on 26 Sep 2015 - 18:54

197

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Is there a first-order formula expressing this property?

Published on 31 Mar 2026 - 5:35

86

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Question about structural induction and predecessor relation

Published on 29 Sep 2015 - 18:33

57

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The relation $(m,n) \mapsto 2^{m-1}(2n-1)$

Published on 30 Sep 2015 - 9:19

1.2k

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Prove that f is surjective

Published on 02 Oct 2015 - 10:27

2.6k

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Show that $R \cap R^{−1}$ is an equivalence relation on $X$?

Published on 02 Oct 2015 - 21:08

65

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How do I prove that for all sets $A$, $B$, and $C$, if $A \prec B$ and $B \prec C$, then $A \prec C$?

Published on 03 Oct 2015 - 1:28

57

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Function examples

Published on 03 Oct 2015 - 16:12

49

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Show that if S and R are sets then $S^R$ is also a set.

Published on 03 Oct 2015 - 16:37

3k

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Composition of relations: A ∘ B

Published on 29 Mar 2026 - 6:04

45

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Relations and quantifiers

Published on 05 Oct 2015 - 1:43

List Question

Relation Proof - Reflexive, Symmetric, Transitive

all subsets of R are reflexive?

number of relations when set is simultaneously reflexive and symmetric

Discrete Math Equivalence Relation

Discrete mathematics set relations anti symmetric

Is there a first-order formula expressing this property?

Question about structural induction and predecessor relation

The relation $(m,n) \mapsto 2^{m-1}(2n-1)$

Prove that f is surjective

Show that $R \cap R^{−1}$ is an equivalence relation on $X$?

How do I prove that for all sets $A$, $B$, and $C$, if $A \prec B$ and $B \prec C$, then $A \prec C$?

Function examples

Show that if S and R are sets then $S^R$ is also a set.

Composition of relations: A ∘ B

Relations and quantifiers

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