Question

Prove an ideal is maximal

score 174 · Answer 1 · 2026-04-14 14:32:40

174

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Prove an ideal is maximal

Published on 14 Apr 2026 - 14:32

score 103 · Answer 2 · 2026-04-15 20:44:10

103

Views

Why is the quotient ring $\frac{\mathbb{R}}{\mathbb{R}} = \left \{ 0 \right \}$?

Published on 15 Apr 2026 - 20:44

score 1.9k · Answer 3 · 2026-04-16 02:17:14

1.9k

Views

Number of non trivial ring homomorphisms from $\mathbb Z_{12}$ to $\mathbb Z_{28}$

Published on 16 Apr 2026 - 2:17

score 464 · Answer 4 · 2026-04-13 18:42:51

464

Views

Why $\mathbb{C}\otimes_\mathbb{Q}\mathbb{C} \not\cong \mathbb{C}\times\mathbb{C}$

Published on 13 Apr 2026 - 18:42

score 80 · Answer 5 · 2026-04-16 11:03:55

80

Views

Is $(x^2 + 1, y^2 + 1)$ a prime ideal in $\mathbb{Q}[x, y]$?

Published on 16 Apr 2026 - 11:03

score 202 · Answer 6 · 2026-04-15 14:11:05

202

Views

Prove that if $\mathrm D$ is integral domain, then $\mathrm D$is UFD iff these conditions hold.

Published on 15 Apr 2026 - 14:11

score 68 · Answer 7 · 2026-04-14 08:47:40

68

Views

An inverse limit of a certain inverse system

Published on 14 Apr 2026 - 8:47

score 169 · Answer 8 · 2026-04-17 03:49:40

169

Views

Proving that a zero ring cannot have a homomorphism to a unital ring.

Published on 17 Apr 2026 - 3:49

score 242 · Answer 9 · 2026-04-13 16:05:23

242

Views

Is there an online database somewhere that lists identities for algebraic structures with two binary operators?

Published on 13 Apr 2026 - 16:05

score 1.2k · Answer 10 · 2026-04-09 06:29:55

1.2k

Views

Jacobson radical of a finitely generated $\mathbb Z$-algebra is nilpotent

Published on 09 Apr 2026 - 6:29

score 136 · Answer 11 · 2026-04-23 05:58:01

136

Views

Intersection of $max(R)$ with a closed subset in $Spec(R)$

Published on 23 Apr 2026 - 5:58

score 156 · Answer 12 · 2026-04-23 05:55:33

156

Views

$\mathbb C[x_1,\ldots,x_n]/I=\mathbb C\times\cdots\times\mathbb C$.

Published on 23 Apr 2026 - 5:55

score 785 · Answer 13 · 2026-04-12 11:25:06

785

Views

Deducing factorization into irreducibles by maximality principles (in a PID)

Published on 12 Apr 2026 - 11:25

score 38 · Answer 14 · 2026-04-15 02:22:25

38

Views

Why the map sending $a\otimes b$ to $(ab, a\bar{b})$ is injective?

Published on 15 Apr 2026 - 2:22

score 118 · Answer 15 · 2026-04-11 04:18:23

118

Views

Question about nonisomorphic polynomial rings.

Published on 11 Apr 2026 - 4:18

List Question

Prove an ideal is maximal

Why is the quotient ring $\frac{\mathbb{R}}{\mathbb{R}} = \left \{ 0 \right \}$?

Number of non trivial ring homomorphisms from $\mathbb Z_{12}$ to $\mathbb Z_{28}$

Why $\mathbb{C}\otimes_\mathbb{Q}\mathbb{C} \not\cong \mathbb{C}\times\mathbb{C}$

Is $(x^2 + 1, y^2 + 1)$ a prime ideal in $\mathbb{Q}[x, y]$?

Prove that if $\mathrm D$ is integral domain, then $\mathrm D$is UFD iff these conditions hold.

An inverse limit of a certain inverse system

Proving that a zero ring cannot have a homomorphism to a unital ring.

Is there an online database somewhere that lists identities for algebraic structures with two binary operators?

Jacobson radical of a finitely generated $\mathbb Z$-algebra is nilpotent

Intersection of $max(R)$ with a closed subset in $Spec(R)$

$\mathbb C[x_1,\ldots,x_n]/I=\mathbb C\times\cdots\times\mathbb C$.

Deducing factorization into irreducibles by maximality principles (in a PID)

Why the map sending $a\otimes b$ to $(ab, a\bar{b})$ is injective?

Question about nonisomorphic polynomial rings.

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