Question

Ring homomorphism from ring to subring that fixes subring

score 41 · Answer 1 · 2023-04-07 20:12:48

41

Views

Ring homomorphism from ring to subring that fixes subring

Published on 07 Apr 2023 - 20:12

score 71 · Answer 2 · 2023-04-28 08:00:55

71

Views

How do you prove a ring homomorphism is onto using the range and kernel?

Published on 28 Apr 2023 - 8:00

score 104 · Answer 3 · 2023-04-29 20:21:12

104

Views

Show $f^{-1}(I)$ Ideal in $R$?

Published on 29 Apr 2023 - 20:21

score 68 · Answer 4 · 2023-05-01 18:34:44

68

Views

Define $\varphi_a:F\to\Bbb R$ by $\varphi_a(f)=f(a)$ for $f\in F$, then $f:\Bbb R\to\Bbb R$ is a ring homomorphism for each $a\in\Bbb R$.

Published on 01 May 2023 - 18:34

score 87 · Answer 5 · 2023-06-05 00:40:24

87

Views

Is this map $\mathbb Q(x, y) \to \mathbb Q((t))$ well-defined?

Published on 05 Jun 2023 - 0:40

score 104 · Answer 6 · 2023-06-06 00:44:49

104

Views

Isomorphism between $R/P$ and $R_P/PR_P$

Published on 06 Jun 2023 - 0:44

score 101 · Answer 7 · 2023-06-07 17:06:01

101

Views

What is the set $S$ of rings $R$ such that, for all rings $R'$, there is at most one nonzero homomorphism $R \to R'$?

Published on 07 Jun 2023 - 17:06

score 45 · Answer 8 · 2026-03-25 21:49:43

45

Views

Applying ring homomorphism to coefficients of polynomial is a ring homomorphism?

Published on 25 Mar 2026 - 21:49

score 37 · Answer 9 · 2026-03-25 11:06:24

37

Views

What does "factoring" mean in the context of ring epimorphisms?

Published on 25 Mar 2026 - 11:06

score 35 · Answer 10 · 2023-06-19 18:21:01

35

Views

Question on passage in a tensor product proof

Published on 19 Jun 2023 - 18:21

score 40 · Answer 11 · 2023-07-27 07:31:44

40

Views

Why are the additive idenity elements of two rings assumed to be the same in the Lemma?

Published on 27 Jul 2023 - 7:31

score 126 · Answer 12 · 2023-07-31 17:52:48

126

Views

Is the kernel of a ring homomorphism a subring or an ideal?

Published on 31 Jul 2023 - 17:52

score 53 · Answer 13 · 2026-03-25 23:10:07

53

Views

Number of homomorphisms from $Q[x]/\langle f(x)\rangle$ to $\mathbb{C}$

Published on 25 Mar 2026 - 23:10

score 25 · Answer 14 · 2023-08-27 16:18:19

25

Views

Impact of plaintext modulus overflow in (B)FV homomorphic encryption

Published on 27 Aug 2023 - 16:18

score 155 · Answer 15 · 2023-09-14 15:47:52

155

Views

Does there exist a surjective but not injective homomorphism of rings from an integral domain R → R

Published on 14 Sep 2023 - 15:47

List Question

Ring homomorphism from ring to subring that fixes subring

How do you prove a ring homomorphism is onto using the range and kernel?

Show $f^{-1}(I)$ Ideal in $R$?

Define $\varphi_a:F\to\Bbb R$ by $\varphi_a(f)=f(a)$ for $f\in F$, then $f:\Bbb R\to\Bbb R$ is a ring homomorphism for each $a\in\Bbb R$.

Is this map $\mathbb Q(x, y) \to \mathbb Q((t))$ well-defined?

Isomorphism between $R/P$ and $R_P/PR_P$

What is the set $S$ of rings $R$ such that, for all rings $R'$, there is at most one nonzero homomorphism $R \to R'$?

Applying ring homomorphism to coefficients of polynomial is a ring homomorphism?

What does "factoring" mean in the context of ring epimorphisms?

Question on passage in a tensor product proof

Why are the additive idenity elements of two rings assumed to be the same in the Lemma?

Is the kernel of a ring homomorphism a subring or an ideal?

Number of homomorphisms from $Q[x]/\langle f(x)\rangle$ to $\mathbb{C}$

Impact of plaintext modulus overflow in (B)FV homomorphic encryption

Does there exist a surjective but not injective homomorphism of rings from an integral domain R → R

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