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New posts in abstract-algebra
Infinite sum of ideals
abstract-algebra
ideals
Example of finite ring with a non principal ideal
abstract-algebra
ring-theory
finite-rings
Find all irreducible polynomials of degrees 1,2 and 4 over $\mathbb{F_2}$.
abstract-algebra
ring-theory
field-theory
Group tables for a group of four elements.
abstract-algebra
group-theory
finite-groups
abelian-groups
On Bachet's Duplication Formula and the number $-432$
abstract-algebra
number-theory
reference-request
diophantine-equations
elliptic-curves
Is the free product of residually finite groups always residually finite?
abstract-algebra
group-theory
group-homomorphism
infinite-groups
free-product
Find $\mathrm{Aut}(G)$, $\mathrm{Inn}(G)$ and $\mathrm{Aut}(G)/\mathrm{Inn}(G)$ for $G = D_4$
abstract-algebra
group-theory
Kähler differentials of tensor product
abstract-algebra
algebraic-geometry
commutative-algebra
When does a system of polynomial equations have infinitely many solutions?
abstract-algebra
algebraic-geometry
polynomials
systems-of-equations
computer-algebra-systems
Reference request for CMI M.Sc entrance exam
real-analysis
abstract-algebra
general-topology
complex-analysis
reference-request
Annihilator of a vector space $V$ is the zero subspace of $V^*$
linear-algebra
abstract-algebra
linear-transformations
dual-spaces
When does there exist a section of $GL_n(\mathbb Z_p) \rightarrow GL_n(\mathbb F_p)$?
abstract-algebra
group-theory
Showing a Functor is not Representable
abstract-algebra
ring-theory
category-theory
Continued Fraction using all Perfect Squares
abstract-algebra
sequences-and-series
number-theory
arithmetic
continued-fractions
Normal subgroup: a problem in Verification of equivalence
abstract-algebra
group-theory
normal-subgroups
Correspondence between Ext group and extensions (from Weibel's book)
abstract-algebra
notation
homological-algebra
Free modules are projective.
abstract-algebra
projective-module
Show that $x^2 + x + 12 = 3y^5$ has no integer solutions.
abstract-algebra
algebraic-number-theory
Category Theory textbook (learning through guided discovery Dummit and Foote)
abstract-algebra
reference-request
category-theory
book-recommendation
Normalizer and centralizer are equivalent when $p$ is the smallest prime dividing $|G|$
abstract-algebra
group-theory
prime-numbers
sylow-theory
normal-subgroups
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