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15
41
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I don't understand a question ("polynomial ring $\mathbb{C}[T]$ where $T(w)=Aw$")

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#ring-theory #linear-transformations #polynomial-rings
484
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Integral Closure of Ring $k[t,s]/(s^2 -t^2(1+t))$

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#algebraic-geometry #ring-theory #commutative-algebra
117
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Are all unital endormorphisms of a Weyl algebra automorphisms?

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#abstract-algebra #ring-theory #ring-homomorphism #differential-algebra
159
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Local idempotents in power series rings

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#abstract-algebra #algebraic-geometry #ring-theory #commutative-algebra
798
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$\mathbb{Z}[\sqrt{-7}]$ is not an Euclidian Domain

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#ring-theory #ideals #principal-ideal-domains #integral-domain
752
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Proof about ideals of cartesian product of rings

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#abstract-algebra #proof-verification #ring-theory #ideals
61
Views

How to show a principal prime ideal is not irreducible...

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#ring-theory
104
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Frac$(R/p)=(R/p)_p$?

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#abstract-algebra #ring-theory #commutative-algebra
902
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Constructing a centrally primitive idempotent in the group algebra of the symmetric group

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#ring-theory #representation-theory #symmetric-groups #idempotents #young-tableaux
431
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Characteristic of a ring with unity element is the order of the unity element

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#ring-theory
163
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Nagata rings: localization and finite algebra

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#abstract-algebra #ring-theory #commutative-algebra #localization #local-rings
173
Views

Questions related to group and ring

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#group-theory #ring-theory
289
Views

Failure of existence of GCD

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#ring-theory #ideals #order-theory #gcd-and-lcm
128
Views

Determine the set of units $(\Bbb Z/n\Bbb Z)^\times$ for different values of $n$

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#group-theory #ring-theory #group-homomorphism #ring-homomorphism
126
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Does every $k$ algebra necessarily have a basis closed under multiplication?

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#abstract-algebra #ring-theory

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