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15
Math.TechQA.Club
2026-04-12 08:21:42
1.3k
Views
The set of all complex homomorphisms of abelian group $G$ has the same structure as $G$
Published on
12 Apr 2026 - 8:21
#abstract-algebra
#group-theory
296
Views
Proof explanation: Division Algorithm
Published on
09 Apr 2026 - 15:16
#abstract-algebra
#elementary-number-theory
#proof-explanation
155
Views
$HH_1(\mathbb{C})=0$ over $\mathbb{C}$, but $HH_1(\mathbb{C})\neq 0$ over $\mathbb{Q}$
Published on
14 May 2026 - 6:43
#abstract-algebra
#homology-cohomology
#homological-algebra
166
Views
Given roots of unity eigenvalues, can we be sure about similarity to circulant matrix?
Published on
10 May 2026 - 10:17
#linear-algebra
#abstract-algebra
#matrices
#group-theory
#circulant-matrices
96
Views
Even Dimensional Spheres and Lie Algebra Inclusions
Published on
10 May 2026 - 10:25
#abstract-algebra
#differential-geometry
#lie-groups
#lie-algebras
#homogeneous-spaces
56
Views
Why are there are no prime divisors of $z^{4}$?
Published on
22 Apr 2026 - 17:26
#abstract-algebra
#number-theory
#elementary-number-theory
964
Views
Galois Group of the 11th roots of Unity
Published on
13 Apr 2026 - 5:25
#abstract-algebra
#galois-theory
604
Views
Does there exist a formula for product of the primitive $ n $th roots of unity.
Published on
10 May 2026 - 18:29
#abstract-algebra
#number-theory
#cyclotomic-polynomials
41
Views
Irreducible representations of product of two algebras, $A \times B$
Published on
14 Apr 2026 - 1:24
#abstract-algebra
#representation-theory
3.2k
Views
Understanding an Algebra over a Field
Published on
11 Apr 2026 - 2:14
#abstract-algebra
#field-theory
74
Views
Let $K$ be the Klein bottle. Give examples of cover spaces $p_1:E_1\to K, p_1:E_2\to K$ each with two sheets and such that $E_1$ and $E_2$
Published on
10 May 2026 - 15:10
#abstract-algebra
#general-topology
#algebraic-topology
#covering-spaces
#fundamental-groups
741
Views
Show that $\Bbb Q$ is not a finitely generated $\Bbb Z$-algebra.
Published on
10 May 2026 - 14:56
#abstract-algebra
#modules
#algebras
309
Views
Field with both $\mathbb{Z}/{5}$ and $\mathbb{Z}/{7}$ as subfields?
Published on
13 Apr 2026 - 2:20
#abstract-algebra
#field-theory
#finite-fields
50
Views
Define $f(x) = x^2 + x + 1 \in \mathbb{Z}_2[x]$. Write down all elements of $\mathbb{Z}_2[x]/f(x)\mathbb{Z}_2[x]$ and prove that your list is complete
Published on
15 Apr 2026 - 2:47
#abstract-algebra
#polynomials
#ring-theory
76
Views
Show that the $\mathbb{Q}$-homomorphism is well-defined.
Published on
14 Apr 2026 - 3:23
#abstract-algebra
#galois-theory
#extension-field
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