Question

When might identifying singleton subsets with their (single) elements "cause confusion"?

score 51 · Answer 1 · 2026-04-29 12:55:12

51

Views

When might identifying singleton subsets with their (single) elements "cause confusion"?

Published on 29 Apr 2026 - 12:55

score 1k · Answer 2 · 2026-04-14 18:49:53

1k

Views

Show whether $R=\{(x,y):x^2+2y=8\}$ is reflexive, symmetric, or transitive

Published on 14 Apr 2026 - 18:49

score 380 · Answer 3 · 2026-04-29 12:28:56

380

Views

Symmetric difference as a equivalent relation-equivalence classes

Published on 29 Apr 2026 - 12:28

score 167 · Answer 4 · 2026-04-29 12:55:11

167

Views

Relations as Sets of Ordered Pairs

Published on 29 Apr 2026 - 12:55

score 71 · Answer 5 · 2026-04-29 12:55:07

71

Views

Is $R$ symmetric and transitive?

Published on 29 Apr 2026 - 12:55

score 49 · Answer 6 · 2026-04-29 12:27:30

49

Views

How to find the recurrence relation for ordering inspired by $<$ and $=$ relations?

Published on 29 Apr 2026 - 12:27

score 35 · Answer 7 · 2026-04-29 12:54:49

35

Views

Matching pans with a fitting lid

Published on 29 Apr 2026 - 12:54

score 203 · Answer 8 · 2026-04-29 12:54:57

203

Views

What is the correct notation to denote the ordered/unordered concatenation of two strings?

Published on 29 Apr 2026 - 12:54

score 684 · Answer 9 · 2026-04-29 12:45:54

684

Views

Finding Nerode equivalence classes of non regular languages

Published on 29 Apr 2026 - 12:45

score 174 · Answer 10 · 2026-04-29 12:55:19

174

Views

Number of relations.

Published on 29 Apr 2026 - 12:55

score 44 · Answer 11 · 2026-04-29 12:55:20

44

Views

Simple problem of relations which are symmetric

Published on 29 Apr 2026 - 12:55

score 762 · Answer 12 · 2026-05-02 18:19:24

762

Views

Quickly determining whether given lattice is a distributive lattice from a given Hasse diagram

Published on 02 May 2026 - 18:19

score 115 · Answer 13 · 2026-04-29 12:54:56

115

Views

Let $A$ be a finite set such that $|A|=n+1$ for some $2\le n$ and let $R\subseteq A\times A$ be some reflexive relation in $A$. Prove the following:

Published on 29 Apr 2026 - 12:54

score 55 · Answer 14 · 2026-03-24 23:44:23

55

Views

Proof Verification and Help: Showing a Map is Well-defined and a Bijection

Published on 24 Mar 2026 - 23:44

score 205 · Answer 15 · 2026-03-24 23:51:34

205

Views

Prove that $f(x+y)=f(x)+f(y)$, and $f(x\cdot y) = f(x)\cdot f(y)$ implies $f:\mathbb{R} \to \mathbb{R}'$ is a bijective mapping that preserves order.

Published on 24 Mar 2026 - 23:51

List Question

When might identifying singleton subsets with their (single) elements "cause confusion"?

Show whether $R=\{(x,y):x^2+2y=8\}$ is reflexive, symmetric, or transitive

Symmetric difference as a equivalent relation-equivalence classes

Relations as Sets of Ordered Pairs

Is $R$ symmetric and transitive?

How to find the recurrence relation for ordering inspired by $<$ and $=$ relations?

Matching pans with a fitting lid

What is the correct notation to denote the ordered/unordered concatenation of two strings?

Finding Nerode equivalence classes of non regular languages

Number of relations.

Simple problem of relations which are symmetric

Quickly determining whether given lattice is a distributive lattice from a given Hasse diagram

Let $A$ be a finite set such that $|A|=n+1$ for some $2\le n$ and let $R\subseteq A\times A$ be some reflexive relation in $A$. Prove the following:

Proof Verification and Help: Showing a Map is Well-defined and a Bijection

Prove that $f(x+y)=f(x)+f(y)$, and $f(x\cdot y) = f(x)\cdot f(y)$ implies $f:\mathbb{R} \to \mathbb{R}'$ is a bijective mapping that preserves order.

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