Question

Is the topological closure of a transitive relation itself transitive?

score 174 · Answer 1 · 2026-03-25 03:02:16

174

Views

Is the topological closure of a transitive relation itself transitive?

Published on 25 Mar 2026 - 3:02

score 36 · Answer 2 · 2018-04-27 02:46:10

36

Views

Is $y=-x$ an equivalence relation in $\mathbb{R} \times \mathbb{R}$?

Published on 27 Apr 2018 - 2:46

score 5.1k · Answer 3 · 2026-03-21 16:28:16

5.1k

Views

What does it mean when I say that addition/multiplication for an equivalence relation is well defined?

Published on 21 Mar 2026 - 16:28

score 22 · Answer 4 · 2018-04-29 15:38:22

22

Views

given a function $f$, as $f: C \rightarrow P(A)$ as $f\left(R\right)= \left[a\right]_{R}$ does $f$ have an inverse?

Published on 29 Apr 2018 - 15:38

score 40 · Answer 5 · 2018-04-29 18:18:47

40

Views

Is this relation R transitive?

Published on 29 Apr 2018 - 18:18

score 66 · Answer 6 · 2018-04-29 23:20:32

66

Views

Antisymmetry relations

Published on 29 Apr 2018 - 23:20

score 225 · Answer 7 · 2018-04-30 16:06:49

225

Views

How many injective functions from $\{5,6,7,8,9\}$ to itself map $5$ and $6$ to another number?

Published on 30 Apr 2018 - 16:06

score 42 · Answer 8 · 2018-04-30 16:41:31

42

Views

How many functions map a number $x$ to $y$ such that $(x\mod y) = 0$?

Published on 30 Apr 2018 - 16:41

score 29 · Answer 9 · 2026-02-25 12:19:45

29

Views

Such thing as inverse/undo "search" or "filter" operator

Published on 25 Feb 2026 - 12:19

score 35 · Answer 10 · 2018-05-04 11:13:18

Find extremals of $B$ with respect to $R= \{(x,y) \in \mathbb{R} \times \mathbb{R} \mid x \leq y\}$, $B=\{x \in \mathbb{R} | 1 \leq x < 2\}$

score 110 · Answer 11 · 2018-05-05 05:06:44

110

Views

Prove $ R \cap (B \times B) $ is partial order on B

Published on 05 May 2018 - 5:06

score 58 · Answer 12 · 2018-05-05 16:47:40

58

Views

If both $R$ and $S$ are total order, will $T$ be total order?

Published on 05 May 2018 - 16:47

score 134 · Answer 13 · 2018-05-06 06:06:33

134

Views

If $b$ is the largest element of $B$ then it is also maximal element of $B$

Published on 06 May 2018 - 6:06

score 131 · Answer 14 · 2018-05-06 07:09:17

131

Views

Prove b is the g.l.b of B

Published on 06 May 2018 - 7:09

score 2.1k · Answer 15 · 2026-03-22 13:12:45

2.1k

Views

Prove that union of two equivalences relations is also equivalence relation if and only if that union equals to thier compositions

Published on 22 Mar 2026 - 13:12

List Question

Is the topological closure of a transitive relation itself transitive?

Is $y=-x$ an equivalence relation in $\mathbb{R} \times \mathbb{R}$?

What does it mean when I say that addition/multiplication for an equivalence relation is well defined?

given a function $f$, as $f: C \rightarrow P(A)$ as $f\left(R\right)= \left[a\right]_{R}$ does $f$ have an inverse?

Is this relation R transitive?

Antisymmetry relations

How many injective functions from $\{5,6,7,8,9\}$ to itself map $5$ and $6$ to another number?

How many functions map a number $x$ to $y$ such that $(x\mod y) = 0$?

Such thing as inverse/undo "search" or "filter" operator

Find extremals of $B$ with respect to $R= \{(x,y) \in \mathbb{R} \times \mathbb{R} \mid x \leq y\}$, $B=\{x \in \mathbb{R} | 1 \leq x < 2\}$

Prove $ R \cap (B \times B) $ is partial order on B

If both $R$ and $S$ are total order, will $T$ be total order?

If $b$ is the largest element of $B$ then it is also maximal element of $B$

Prove b is the g.l.b of B

Prove that union of two equivalences relations is also equivalence relation if and only if that union equals to thier compositions

Trending Questions

Popular # Hahtags

Popular Questions