Question

Dense and irreflexive binary relation

score 233 · Answer 1 · 2026-04-02 19:12:58

233

Views

Dense and irreflexive binary relation

Published on 02 Apr 2026 - 19:12

score 48 · Answer 2 · 2017-04-06 16:52:59

48

Views

Polynomials and functions

Published on 06 Apr 2017 - 16:52

score 249 · Answer 3 · 2017-04-06 23:27:43

249

Views

Am I correct about the transitive closure of this relation?

Published on 06 Apr 2017 - 23:27

score 241 · Answer 4 · 2026-04-02 14:12:59

241

Views

If $R$ is a symmetric and anti-symmetric relation on $A$, and $D$ is a diagonal in $A\times A$, then $R\subset D$, and $R\neq D$ in some cases.

Published on 02 Apr 2026 - 14:12

score 47 · Answer 5 · 2017-04-07 12:52:58

47

Views

Relation with empty sets

Published on 07 Apr 2017 - 12:52

score 111 · Answer 6 · 2017-04-08 18:23:13

111

Views

Relations and a graph

Published on 08 Apr 2017 - 18:23

score 19 · Answer 7 · 2026-03-29 22:07:32

19

Views

Write number of elements in P(X) for which gof(A) =1

Published on 29 Mar 2026 - 22:07

score 606 · Answer 8 · 2017-04-09 10:42:30

606

Views

How to graph and determine a function validity

Published on 09 Apr 2017 - 10:42

score 25 · Answer 9 · 2023-01-29 15:27:08

25

Views

Proof that order on $A \times B$ is linear only if $A$ or $B$ has no more than 1 element

Published on 29 Jan 2023 - 15:27

score 61 · Answer 10 · 2026-03-25 09:29:18

61

Views

About 2 operators such that $X(Y+Z) = (XY)+(X*Z)$ , $W+(U+V)\neq (W+U)+V$

Published on 25 Mar 2026 - 9:29

score 52 · Answer 11 · 2023-01-30 14:20:31

52

Views

Check if this function injective or surjective $ f(x,y)=[x]_R \cap[y]_R$

Published on 30 Jan 2023 - 14:20

score 49 · Answer 12 · 2026-04-01 14:45:20

49

Views

Find cardinality of a set {$f \in \mathbb{N}^{\mathbb{N}}|f\le h$} where $h(n)=n+1$

Published on 01 Apr 2026 - 14:45

score 29 · Answer 13 · 2023-02-01 01:27:21

29

Views

Finding transitive closure

Published on 01 Feb 2023 - 1:27

score 88 · Answer 14 · 2023-02-04 16:33:57

88

Views

Consider two relations $R$ and $S$ on a set $A$ with $R$ being antisymmetric. Prove $R \cap S$ is antisymmetric.

Published on 04 Feb 2023 - 16:33

score 49 · Answer 15 · 2026-04-02 20:52:27

49

Views

Find a set of minimal elements in set $\langle \mathbb N\setminus\{0\},|\rangle$

Published on 02 Apr 2026 - 20:52

List Question

Dense and irreflexive binary relation

Polynomials and functions

Am I correct about the transitive closure of this relation?

If $R$ is a symmetric and anti-symmetric relation on $A$, and $D$ is a diagonal in $A\times A$, then $R\subset D$, and $R\neq D$ in some cases.

Relation with empty sets

Relations and a graph

Write number of elements in P(X) for which gof(A) =1

How to graph and determine a function validity

Proof that order on $A \times B$ is linear only if $A$ or $B$ has no more than 1 element

About 2 operators such that $X(Y+Z) = (XY)+(X*Z)$ , $W+(U+V)\neq (W+U)+V$

Check if this function injective or surjective $ f(x,y)=[x]_R \cap[y]_R$

Find cardinality of a set {$f \in \mathbb{N}^{\mathbb{N}}|f\le h$} where $h(n)=n+1$

Finding transitive closure

Consider two relations $R$ and $S$ on a set $A$ with $R$ being antisymmetric. Prove $R \cap S$ is antisymmetric.

Find a set of minimal elements in set $\langle \mathbb N\setminus\{0\},|\rangle$

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