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Dec
3
revised when $\Bbb{Z}^n$ isomorphic to $\Bbb{Z}^m$
edited body
Dec
3
comment when $\Bbb{Z}^n$ isomorphic to $\Bbb{Z}^m$
Why the downvote? Is my answer incorrect?
Dec
3
comment when $\Bbb{Z}^n$ isomorphic to $\Bbb{Z}^m$
@learnmore No, I'm not. But if he (or any other visitor of this question) does, in my opinion, seeing the categorial context does not do any harm, in constrast, it sheds light on the general idea behind this argument.
Dec
3
answered when $\Bbb{Z}^n$ isomorphic to $\Bbb{Z}^m$
Dec
3
answered wss process and autocorrelation
Dec
3
revised Interchanging Two Sums
added 1 character in body
Dec
3
comment Interchanging Two Sums
Right. Going to correct it, thx.
Dec
3
answered Linear algebra, vector space
Dec
3
revised Linear algebra, vector space
added 149 characters in body
Dec
3
answered How to compute $ \lim\limits_{t\rightarrow0}\frac{\int_w^{w+tv}f(y)dy}{t} $?
Dec
3
answered Interchanging Two Sums
Dec
3
revised Rank of a linear operator given its characteristic and minimal polynomial
added 18 characters in body; edited title
Dec
2
answered On the total variation of a differentiable function
Dec
2
answered Confusion on Theorem in Kato's book
Dec
2
answered Find the adjoint operator of an operator on $C \left [ 0,1 \right ]$
Dec
2
reviewed Looks OK Prove $\frac{1}{2} \|y-x\|^2$ is a strongly convex function
Dec
2
comment Triple Integral in mvc
No, you do not have $y = x^2 + z^2$ all over $D$. You have $0 \le y \le x^2 + z^2$.
Dec
2
answered Find relation between $e^x$ and $x$
Dec
2
answered Triple Integral in mvc
Dec
2
revised Proving that a transformation is Unitary
added 592 characters in body