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user371231

Apparently, this user prefers to keep an air of mystery about them.

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  • Member for 2 years, 4 months
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  • Last seen 7 hours ago

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Top Posts (78) All Questions Answers | Votes Newest

13 Proof of a theorem on simultaneous diagonalization from Hoffman and Kunze. Mar 13 '17
7 $A$ nilpotent and $A+c_iB$ is nilpotent then $B$ is nilpotent. Jan 7
6 How can I show that $v_i\otimes v_j$ is non zero in $V \otimes_\mathbb {F}V$ Jan 26 '17
6 Example of a commutative noetherian ring with $1$ which is neither domain nor local and has a principal prime ideal of height $1.$ Feb 25 '17
6 $(x^a-y^b)$ is a prime ideal in $R[x,y]$ where $R$ is a domain and $\gcd(a,b)=1$. [duplicate] Jan 25 '18
5 Smiths normal form is similar to $xI-A.$ Jun 2 '18
5 What is the simplified form of the generalized eigen space when the characteristic polynomial does not split in the given field. Dec 21 '18
5 Does there exist a $1-1$ ring homomorphism from $M_d(\mathbb{F})$ to $M_n(\mathbb{F})$ for $d <n$? Dec 29 '18
5 What will be the smallest ring containing two rings? Jan 3
4 A linear map $T: \mathbb{R^3 \to \mathbb{R^3}}$ has a two dimensional invariant subspace. Jan 10
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