Question

Proving that this mapping is one to one

score 59 · Answer 1 · 2026-04-14 04:02:44

59

Views

Proving that this mapping is one to one

Published on 14 Apr 2026 - 4:02

score 192 · Answer 2 · 2026-04-14 09:31:04

192

Views

Is $\mathbb{C}\bigotimes_\mathbb{R}\mathbb{C}\simeq \mathbb{C}\bigotimes_{\mathbb{C}}\mathbb{C}$?

Published on 14 Apr 2026 - 9:31

score 186 · Answer 3 · 2026-04-14 06:22:07

186

Views

Suppose that $R$ is a commutative ring with unity, $a \in R$, and $\varphi(r) = ar$ defines a ring homomorphism. Prove that $a$ is idempotent.

Published on 14 Apr 2026 - 6:22

score 421 · Answer 4 · 2026-04-14 04:40:52

421

Views

Trouble on Aluffi's Exercise 5.5, Chapter 6: finitely generated projective module over a local ring is free

Published on 14 Apr 2026 - 4:40

score 257 · Answer 5 · 2026-04-16 13:28:49

257

Views

Correspondence between ideals of $R$ and $D^{-1}R$

Published on 16 Apr 2026 - 13:28

score 734 · Answer 6 · 2026-05-04 10:01:14

734

Views

Atiyah & MacDonald on local Noetherian and Artinian rings - sanity check.

Published on 04 May 2026 - 10:01

score 869 · Answer 7 · 2026-04-11 11:02:25

869

Views

Steps to construct the Field of fractions of Gaussian Integers $\mathbb{Z}[i]$

Published on 11 Apr 2026 - 11:02

score 74 · Answer 8 · 2026-04-16 11:27:51

74

Views

$M_n(D)$ is left and right-simple?

Published on 16 Apr 2026 - 11:27

score 284 · Answer 9 · 2026-04-14 05:02:39

284

Views

Looking for help, Aluffi Exercise 5.13, Chapter 6: characterization of PIDs

Published on 14 Apr 2026 - 5:02

score 359 · Answer 10 · 2026-04-13 21:12:31

359

Views

A finite-dimensional $K$-algebra?

Published on 13 Apr 2026 - 21:12

score 126 · Answer 11 · 2026-04-21 16:04:35

126

Views

Multiplicative group of a field contains maximal n-1 elements with order n

Published on 21 Apr 2026 - 16:04

score 397 · Answer 12 · 2026-04-14 16:24:16

397

Views

Counterexample for the infinitely many primes between two primes in a Noetherian ring

Published on 14 Apr 2026 - 16:24

score 426 · Answer 13 · 2026-04-09 00:22:36

426

Views

Simple questions about the Jacobson Radical

Published on 09 Apr 2026 - 0:22

score 406 · Answer 14 · 2026-04-11 15:31:37

406

Views

algebra with topology homework problem

Published on 11 Apr 2026 - 15:31

score 73 · Answer 15 · 2026-04-15 16:40:53

73

Views

Computing the inverse of an element in $\mathbb{Z}_5[x] / \langle x^2+x+2\rangle$

Published on 15 Apr 2026 - 16:40

List Question

Proving that this mapping is one to one

Is $\mathbb{C}\bigotimes_\mathbb{R}\mathbb{C}\simeq \mathbb{C}\bigotimes_{\mathbb{C}}\mathbb{C}$?

Suppose that $R$ is a commutative ring with unity, $a \in R$, and $\varphi(r) = ar$ defines a ring homomorphism. Prove that $a$ is idempotent.

Trouble on Aluffi's Exercise 5.5, Chapter 6: finitely generated projective module over a local ring is free

Correspondence between ideals of $R$ and $D^{-1}R$

Atiyah & MacDonald on local Noetherian and Artinian rings - sanity check.

Steps to construct the Field of fractions of Gaussian Integers $\mathbb{Z}[i]$

$M_n(D)$ is left and right-simple?

Looking for help, Aluffi Exercise 5.13, Chapter 6: characterization of PIDs

A finite-dimensional $K$-algebra?

Multiplicative group of a field contains maximal n-1 elements with order n

Counterexample for the infinitely many primes between two primes in a Noetherian ring

Simple questions about the Jacobson Radical

algebra with topology homework problem

Computing the inverse of an element in $\mathbb{Z}_5[x] / \langle x^2+x+2\rangle$

Trending Questions

Popular # Hahtags

Popular Questions