Reputation
397
Next privilege 500 Rep.
Access review queues
Badges
3 18
Newest
 Talkative
Impact
~14k people reached

1d
accepted When does a matrix have a cyclic decomposition and when a rational form?
1d
comment When does a matrix have a cyclic decomposition and when a rational form?
should it be $\mathtt{diag} (C_{(x-1)^2(x-2}, C_{x-1})$, as $p_2 \mid p_1$?
1d
comment When does a matrix have a cyclic decomposition and when a rational form?
I thought I got it... mmm... is it true that with field extension, the minimal polynomial might factor out more, hence the annihilators might change and so does the rational form, as it's built by the blocks of companion matrix of the annihilators?
1d
revised When does a matrix have a cyclic decomposition and when a rational form?
deleted 1 character in body
Apr
14
asked When does a matrix have a cyclic decomposition and when a rational form?
Apr
13
accepted How to prove: $\alpha$ and $\gamma$ have the same $T$-annihilator, then so do $f\alpha$ and $f\gamma$
Apr
12
comment How to prove: $\alpha$ and $\gamma$ have the same $T$-annihilator, then so do $f\alpha$ and $f\gamma$
Yes your assumptions are right, sorry I omitted those notations. I've updated the question with my try. Hopefully it's correct?
Apr
12
revised How to prove: $\alpha$ and $\gamma$ have the same $T$-annihilator, then so do $f\alpha$ and $f\gamma$
added 677 characters in body
Apr
12
asked How to prove: $\alpha$ and $\gamma$ have the same $T$-annihilator, then so do $f\alpha$ and $f\gamma$
Apr
5
awarded  Talkative
Apr
1
accepted A question on “Linear Algebra” by Kenneth Hoffman
Apr
1
comment A question on “Linear Algebra” by Kenneth Hoffman
thank you! how silly I'm. $[0;1;-1]$ is the other eigenvector that the eigenvalue is $1$.
Mar
31
asked A question on “Linear Algebra” by Kenneth Hoffman
Mar
29
comment Hoffman “Linear Algebra”: why need such a long proof?
@HagenvonEitzen of course. how silly i am, from triangle jumping to diagonal....
Mar
29
comment Hoffman “Linear Algebra”: why need such a long proof?
@HagenvonEitzen I updated the question.
Mar
29
revised Hoffman “Linear Algebra”: why need such a long proof?
added 320 characters in body
Mar
29
asked Hoffman “Linear Algebra”: why need such a long proof?
Mar
28
accepted How is multiplication defined on Grassman ring?
Mar
28
asked How is multiplication defined on Grassman ring?
Mar
28
comment Recommend me a text or webpage introducting gamma function throughly
Ch11 is not about Gamma function?@vladhagen