Question

Units in the ring of germs of a continuous functions at $p$.

score 47 · Answer 1 · 2026-03-25 09:50:14

47

Views

Units in the ring of germs of a continuous functions at $p$.

Published on 25 Mar 2026 - 9:50

score 77 · Answer 2 · 2026-04-09 18:21:52

77

Views

Prove that a squared number is an equivalence relation of $-1\pmod{p}$

Published on 09 Apr 2026 - 18:21

score 392 · Answer 3 · 2021-12-10 22:27:38

392

Views

Consider the following relation on $\mathbb{R}$: $x$ ~ $y$ if any only if, $x^2-y^2 \in \mathbb{Z}$

Published on 10 Dec 2021 - 22:27

score 72 · Answer 4 · 2021-12-12 01:02:25

72

Views

Proving $\phi$ is surjective if and only if $\tilde{\phi}$ is surjective.

Published on 12 Dec 2021 - 1:02

score 628 · Answer 5 · 2021-12-12 11:22:31

628

Views

Prove an equivalence relation: $mRn \Leftrightarrow 3m-5n$ is even

Published on 12 Dec 2021 - 11:22

score 82 · Answer 6 · 2021-12-12 18:31:33

82

Views

Proving that $\tilde{\phi}$ is injective if and only if whenever $\phi(x_1) = \phi(x_2)$, we have $x_1 \sim x_2$.

Published on 12 Dec 2021 - 18:31

score 189 · Answer 7 · 2026-04-11 23:05:50

189

Views

Equivalence Relation : $5x - 2y$ divisible by $3$

Published on 11 Apr 2026 - 23:05

score 44 · Answer 8 · 2026-04-12 01:43:23

44

Views

A relation on cartesian product

Published on 12 Apr 2026 - 1:43

score 79 · Answer 9 · 2021-12-14 21:06:58

79

Views

Equivalence relation /equivalence classes

Published on 14 Dec 2021 - 21:06

score 53 · Answer 10 · 2021-12-16 17:32:37

53

Views

Let $A,B$ sets and $\text{~},\text{^}$ equivalence relations in $A$ and $B$ respectively.

Published on 16 Dec 2021 - 17:32

score 191 · Answer 11 · 2026-04-11 21:24:14

191

Views

I need help understanding Equivalence Relations and Equivalence Classes to proceed in Topology

Published on 11 Apr 2026 - 21:24

score 59 · Answer 12 · 2021-12-25 14:46:07

59

Views

Equivalence relations and partially ordered sets

Published on 25 Dec 2021 - 14:46

score 54 · Answer 13 · 2022-01-03 20:48:52

54

Views

Don't Row-equivalent, Inhomogeneous Systems of Linear Equations Have the Same Solution Sets?

Published on 03 Jan 2022 - 20:48

score 157 · Answer 14 · 2022-01-05 04:17:00

157

Views

For any group $(G, \cdot)$, $a, b \in G \iff a \cdot b \in G$

Published on 05 Jan 2022 - 4:17

score 129 · Answer 15 · 2026-03-25 15:52:40

129

Views

If we have a weak homotopy equivalence $f:X \rightarrow Y$, does there necessarily exist a weak homotopy equivalence $g:Y \rightarrow X$?

Published on 25 Mar 2026 - 15:52

List Question

Units in the ring of germs of a continuous functions at $p$.

Prove that a squared number is an equivalence relation of $-1\pmod{p}$

Consider the following relation on $\mathbb{R}$: $x$ ~ $y$ if any only if, $x^2-y^2 \in \mathbb{Z}$

Proving $\phi$ is surjective if and only if $\tilde{\phi}$ is surjective.

Prove an equivalence relation: $mRn \Leftrightarrow 3m-5n$ is even

Proving that $\tilde{\phi}$ is injective if and only if whenever $\phi(x_1) = \phi(x_2)$, we have $x_1 \sim x_2$.

Equivalence Relation : $5x - 2y$ divisible by $3$

A relation on cartesian product

Equivalence relation /equivalence classes

Let $A,B$ sets and $\text{~},\text{^}$ equivalence relations in $A$ and $B$ respectively.

I need help understanding Equivalence Relations and Equivalence Classes to proceed in Topology

Equivalence relations and partially ordered sets

Don't Row-equivalent, Inhomogeneous Systems of Linear Equations Have the Same Solution Sets?

For any group $(G, \cdot)$, $a, b \in G \iff a \cdot b \in G$

If we have a weak homotopy equivalence $f:X \rightarrow Y$, does there necessarily exist a weak homotopy equivalence $g:Y \rightarrow X$?

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