Question

How do you prove the group (Zn\{0}, *) has an inverse element?

score 831 · Answer 1 · 2026-04-12 13:52:36

831

Views

How do you prove the group (Zn\{0}, *) has an inverse element?

Published on 12 Apr 2026 - 13:52

score 229 · Answer 2 · 2026-04-10 12:43:07

229

Views

Fundamental theorem of algebra - connecting equivalent formulations

Published on 10 Apr 2026 - 12:43

score 303 · Answer 3 · 2026-04-15 06:36:26

The fixed field of a conjugate of a subgroup $G'$ of the Galois Group of a normal extension is the image of the fixed field of $G'$ under automorphism

score 526 · Answer 4 · 2026-04-14 19:33:46

526

Views

Prove R[[x]] is a complete metric space.

Published on 14 Apr 2026 - 19:33

score 937 · Answer 5 · 2026-04-14 13:46:53

937

Views

Finding a Galois extension of the rationals whose Galois group is isomorphic to $\mathbb{Z}_3 \oplus \mathbb{Z}_3$

Published on 14 Apr 2026 - 13:46

score 80 · Answer 6 · 2026-04-15 00:59:26

80

Views

Given $a, b ∈\Bbb R$, evaluate

Published on 15 Apr 2026 - 0:59

score 299 · Answer 7 · 2026-04-14 12:20:20

299

Views

Finite groups with only one conjugacy class of maximal subgroups

Published on 14 Apr 2026 - 12:20

score 105 · Answer 8 · 2026-04-13 01:16:38

105

Views

Is the dual of a left action a left coaction or a right coaction?

Published on 13 Apr 2026 - 1:16

score 62 · Answer 9 · 2026-04-16 13:49:53

62

Views

Showing that if $E$ is a Banach space, and $u \in \mathcal{L}(E)$ then $f(u) = u \circ u \circ u$ is differentiable.

Published on 16 Apr 2026 - 13:49

score 264 · Answer 10 · 2026-04-08 23:25:05

264

Views

A problem about cyclic groups.

Published on 08 Apr 2026 - 23:25

score 2.2k · Answer 11 · 2026-04-16 09:53:36

Proof that a ring homomorphism is isomorphic if and only if there is another ring homomorphism such that there is an identity map on R and S

score 2.7k · Answer 12 · 2026-04-13 16:04:12

2.7k

Views

Proving a subgroup of $\operatorname{GL}(2, \mathbb R)$

Published on 13 Apr 2026 - 16:04

score 90 · Answer 13 · 2026-04-16 11:58:58

90

Views

Prove that $\Bbb Z/6\Bbb Z\cong\Bbb Z/3\Bbb Z \times\Bbb Z/2\Bbb Z$

Published on 16 Apr 2026 - 11:58

score 1.2k · Answer 14 · 2026-04-13 17:01:04

1.2k

Views

Prove that x and y commute

Published on 13 Apr 2026 - 17:01

score 64 · Answer 15 · 2026-04-11 16:32:33

64

Views

Help in understanding a proof of Milne about the order of a product of elements in a group

Published on 11 Apr 2026 - 16:32

List Question

How do you prove the group (Zn\{0}, *) has an inverse element?

Fundamental theorem of algebra - connecting equivalent formulations

The fixed field of a conjugate of a subgroup $G'$ of the Galois Group of a normal extension is the image of the fixed field of $G'$ under automorphism

Prove R[[x]] is a complete metric space.

Finding a Galois extension of the rationals whose Galois group is isomorphic to $\mathbb{Z}_3 \oplus \mathbb{Z}_3$

Given $a, b ∈\Bbb R$, evaluate

Finite groups with only one conjugacy class of maximal subgroups

Is the dual of a left action a left coaction or a right coaction?

Showing that if $E$ is a Banach space, and $u \in \mathcal{L}(E)$ then $f(u) = u \circ u \circ u$ is differentiable.

A problem about cyclic groups.

Proof that a ring homomorphism is isomorphic if and only if there is another ring homomorphism such that there is an identity map on R and S

Proving a subgroup of $\operatorname{GL}(2, \mathbb R)$

Prove that $\Bbb Z/6\Bbb Z\cong\Bbb Z/3\Bbb Z \times\Bbb Z/2\Bbb Z$

Prove that x and y commute

Help in understanding a proof of Milne about the order of a product of elements in a group

Trending Questions

Popular # Hahtags

Popular Questions