Question

Fibres of $C_0(X)$-algebra. Clarification of Basics (Williams "Crossed Products of C*-Algebras")

score 82 · Answer 1 · 2026-04-25 13:39:14

82

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Fibres of $C_0(X)$-algebra. Clarification of Basics (Williams "Crossed Products of C*-Algebras")

Published on 25 Apr 2026 - 13:39

score 157 · Answer 2 · 2026-04-14 11:20:29

157

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Given quadratic integral relations for $y$ and $z$, find explicit integral relations for $y+z$ and $yz$

Published on 14 Apr 2026 - 11:20

score 398 · Answer 3 · 2026-04-16 18:43:40

398

Views

$\operatorname{Hom}_{R}(M, N) \cong \operatorname{Hom}_{S}(S \otimes_{R} M, N)$

Published on 16 Apr 2026 - 18:43

score 94 · Answer 4 · 2026-05-10 21:59:05

94

Views

Find all endomorphisms between (Q,+) and (R,+).Which of them are automorphisms?

Published on 10 May 2026 - 21:59

score 153 · Answer 5 · 2026-05-10 12:32:17

153

Views

Proving a ring $A$, generated by Noetherian subring and nilpotent element, is Noetherian again.

Published on 10 May 2026 - 12:32

score 113 · Answer 6 · 2026-04-14 14:18:46

113

Views

A direct product of projective modules

Published on 14 Apr 2026 - 14:18

score 354 · Answer 7 · 2026-05-10 15:28:40

354

Views

Loewy series of modules

Published on 10 May 2026 - 15:28

score 127 · Answer 8 · 2026-04-12 08:21:30

127

Views

Free module over PID and algebraic structure inheritance

Published on 12 Apr 2026 - 8:21

score 148 · Answer 9 · 2026-04-16 18:49:17

148

Views

Difference between containing a cycle of length 3 and containing an element having a cycle of length 3

Published on 16 Apr 2026 - 18:49

score 62 · Answer 10 · 2026-04-15 11:39:29

62

Views

Is there a nontrivial field homomorphism from $GF(2^n)$ to $ GF(2)^n$?

Published on 15 Apr 2026 - 11:39

score 1.3k · Answer 11 · 2026-05-10 17:17:30

1.3k

Views

Prove that, $\operatorname{Aut}(S_3)\simeq S_3 \simeq \operatorname{Inn}(S_3)$

Published on 10 May 2026 - 17:17

score 70 · Answer 12 · 2026-04-17 16:20:25

70

Views

Is $(((a \text{ mod } n)* a \text{ mod } n) * a \text{ mod } n) = aaa \text{ mod } n$?

Published on 17 Apr 2026 - 16:20

score 35 · Answer 13 · 2026-05-10 16:12:20

35

Views

How to find solution to equation A + modinv(A,n) mod n == -1

Published on 10 May 2026 - 16:12

score 724 · Answer 14 · 2026-05-14 11:33:44

724

Views

Cayley’s Theorem Isomorphic Subgroup

Published on 14 May 2026 - 11:33

score 123 · Answer 15 · 2026-04-15 19:46:40

123

Views

Find a maximal ideal $I$ of $\mathbb{R} [x]$ such that $\mathbb{R} [x] / I$ not isomorphic as a ring to $\mathbb{R}$

Published on 15 Apr 2026 - 19:46

List Question

Fibres of $C_0(X)$-algebra. Clarification of Basics (Williams "Crossed Products of C*-Algebras")

Given quadratic integral relations for $y$ and $z$, find explicit integral relations for $y+z$ and $yz$

$\operatorname{Hom}_{R}(M, N) \cong \operatorname{Hom}_{S}(S \otimes_{R} M, N)$

Find all endomorphisms between (Q,+) and (R,+).Which of them are automorphisms?

Proving a ring $A$, generated by Noetherian subring and nilpotent element, is Noetherian again.

A direct product of projective modules

Loewy series of modules

Free module over PID and algebraic structure inheritance

Difference between containing a cycle of length 3 and containing an element having a cycle of length 3

Is there a nontrivial field homomorphism from $GF(2^n)$ to $ GF(2)^n$?

Prove that, $\operatorname{Aut}(S_3)\simeq S_3 \simeq \operatorname{Inn}(S_3)$

Is $(((a \text{ mod } n)* a \text{ mod } n) * a \text{ mod } n) = aaa \text{ mod } n$?

How to find solution to equation A + modinv(A,n) mod n == -1

Cayley’s Theorem Isomorphic Subgroup

Find a maximal ideal $I$ of $\mathbb{R} [x]$ such that $\mathbb{R} [x] / I$ not isomorphic as a ring to $\mathbb{R}$

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