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seen Nov 25 at 22:58

Nov
19
revised Problem 1.25 of Etingof: Indecomposable rep which is not cyclic
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Nov
18
comment Problem 1.25 of Etingof: Indecomposable rep which is not cyclic
I see what you mean now, and you're right. My apologies.
Nov
18
revised Problem 1.25 of Etingof: Indecomposable rep which is not cyclic
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Nov
18
revised Problem 1.25 of Etingof: Indecomposable rep which is not cyclic
added 2 characters in body
Nov
18
revised Problem 1.25 of Etingof: Indecomposable rep which is not cyclic
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Nov
3
asked Problem 1.25 of Etingof: Indecomposable rep which is not cyclic
Oct
28
asked Prime ideals in non-commutative ring
Oct
27
comment Problem 1.24, Introduction to representation theory, Etingof
I mean the regular representation of $A\oplus A$
Oct
27
comment Problem 1.24, Introduction to representation theory, Etingof
The representation $A \oplus A$ of $A$ has cyclic vector $(1,1)$ but is decomposable...
Oct
21
comment Why is axiom of choice needed? (Equivalent conditions for Noetherian)
I think I see what it is now. It is not induction at all as I'm not proving statements... I'm just abusing the term 'doing things by induction', meaning I can't actually write down the 'statement to prove' in the n-th step in first order or whatever unless (n-1)th step (ie picking the submodule) has already been done. Am I right?
Oct
19
comment Can the induced function of non-zero $f \in R[X]$ be zero, when $R$ is an infinite non-integral domain?
$R = \mathbb{Z}_4^{\mathbb{N}}$ with $f(X) = 2X(X-1)$ by the same token. I was clearly overthinking...
Oct
19
accepted Can the induced function of non-zero $f \in R[X]$ be zero, when $R$ is an infinite non-integral domain?
Oct
19
revised Can the induced function of non-zero $f \in R[X]$ be zero, when $R$ is an infinite non-integral domain?
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Oct
19
asked Can the induced function of non-zero $f \in R[X]$ be zero, when $R$ is an infinite non-integral domain?
Oct
19
revised What is a quick proof that $f \in \mathbb{C}[X_1,\dotsc,X_n]$ is determined by its induced function on $\mathbb{C}^n$?
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Oct
19
revised What is a quick proof that $f \in \mathbb{C}[X_1,\dotsc,X_n]$ is determined by its induced function on $\mathbb{C}^n$?
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Oct
19
comment What is a quick proof that $f \in \mathbb{C}[X_1,\dotsc,X_n]$ is determined by its induced function on $\mathbb{C}^n$?
I'm about to edit this question so that it reflects better what I'm looking for. Obviously I knew that induction is involved---it doesn't make the proof quicker. I'd appreciate it if you could help me after my edit. Thanks
Oct
19
revised What is a quick proof that $f \in \mathbb{C}[X_1,\dotsc,X_n]$ is determined by its induced function on $\mathbb{C}^n$?
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Oct
19
asked What is a quick proof that $f \in \mathbb{C}[X_1,\dotsc,X_n]$ is determined by its induced function on $\mathbb{C}^n$?
Oct
14
revised Cardinality of basis of endormophism algebra
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