Question

Axiomatic Systems, finding a relation

score 47 · Answer 1 · 2018-11-15 21:15:44

47

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Axiomatic Systems, finding a relation

Published on 15 Nov 2018 - 21:15

score 356 · Answer 2 · 2026-03-21 23:21:09

356

Views

Relations from X to Y

Published on 21 Mar 2026 - 23:21

score 534 · Answer 3 · 2018-11-16 21:09:41

534

Views

Distinct relations in sets

Published on 16 Nov 2018 - 21:09

score 850 · Answer 4 · 2018-11-18 15:36:26

850

Views

Relation of divisibility {0,1,…,20} - Hasse diagram

Published on 18 Nov 2018 - 15:36

score 1.1k · Answer 5 · 2018-11-19 03:48:29

1.1k

Views

What is the meaning of the symbol $\lesssim$?

Published on 19 Nov 2018 - 3:48

score 362 · Answer 6 · 2018-11-19 15:05:42

362

Views

Why equality of relations is defined like that?

Published on 19 Nov 2018 - 15:05

score 89 · Answer 7 · 2018-11-19 19:46:37

89

Views

Is $\le$ defined by $\langle _1, _1 \rangle \le \langle _2, _2 \rangle$, if $_1 \le _2 \land_1 \ge _2$ a linear order?

Published on 19 Nov 2018 - 19:46

score 128 · Answer 8 · 2018-11-19 22:20:26

128

Views

Prove or disprove that the set of continuous mappings $\phi\colon [0;1]\to [0;1]$ such that [...] forms a group.

Published on 19 Nov 2018 - 22:20

score 232 · Answer 9 · 2018-11-20 23:28:35

232

Views

Show that $R$ is an order relation in $\mathbb{R^2}$

Published on 20 Nov 2018 - 23:28

score 78 · Answer 10 · 2018-11-21 15:49:33

78

Views

Relation on the set of polynomials

Published on 21 Nov 2018 - 15:49

score 104 · Answer 11 · 2018-11-21 22:59:15

$\rho$ antisym., irreflexive, $\rho ^t$ its transitive closure. Prove or disprove: $\rho ^t$ reflexive $\Rightarrow$ $\rho ^t$ symmetric

score 96 · Answer 12 · 2026-03-25 20:09:32

96

Views

Comparing two binary relations using Cartesian products

Published on 25 Mar 2026 - 20:09

score 36 · Answer 13 · 2026-03-22 09:09:16

36

Views

prove that for the equivalence class : X/(X/E) = E

Published on 22 Mar 2026 - 9:09

score 24 · Answer 14 · 2018-11-25 11:47:57

24

Views

operations on relations

Published on 25 Nov 2018 - 11:47

score 834 · Answer 15 · 2026-03-26 11:01:42

834

Views

Prove the inverse relation $f^{-1}$ of a function $f : A\rightarrow B$ is a function from B to A if and only if $f$ is bijective.

Published on 26 Mar 2026 - 11:01

List Question

Axiomatic Systems, finding a relation

Relations from X to Y

Distinct relations in sets

Relation of divisibility {0,1,…,20} - Hasse diagram

What is the meaning of the symbol $\lesssim$?

Why equality of relations is defined like that?

Is $\le$ defined by $\langle _1, _1 \rangle \le \langle _2, _2 \rangle$, if $_1 \le _2 \land_1 \ge _2$ a linear order?

Prove or disprove that the set of continuous mappings $\phi\colon [0;1]\to [0;1]$ such that [...] forms a group.

Show that $R$ is an order relation in $\mathbb{R^2}$

Relation on the set of polynomials

$\rho$ antisym., irreflexive, $\rho ^t$ its transitive closure. Prove or disprove: $\rho ^t$ reflexive $\Rightarrow$ $\rho ^t$ symmetric

Comparing two binary relations using Cartesian products

prove that for the equivalence class : X/(X/E) = E

operations on relations

Prove the inverse relation $f^{-1}$ of a function $f : A\rightarrow B$ is a function from B to A if and only if $f$ is bijective.

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