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bio website jungenschaft-hohenstaufen.de
location Berlin, Germany
age 33
visits member for 2 years, 11 months
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Jun
6
revised Understanding a limit in standard Borel probability space
typo
Jun
6
comment Understanding a limit in standard Borel probability space
@user81204 Yes, we are. ${}{}$
Jun
6
answered Understanding a limit in standard Borel probability space
Jun
6
revised Limit of $\frac{f(x)}x$ for some real function $f$
added 31 characters in body; edited title
Jun
6
comment Is $\|T(x)\|≦\|x\|$, $\forall x\in V$ sufficient condition for $T$ to be an orthogonal projection?
If $\|Tx\| = \|x\|$ for all $x\in V$, then $\|Tx\| =0$ implies $\|x\| =0$, so $\ker(T) = 0$. So $\ker(T) = 0$. As $T$ is a projection $T = {\rm Id}$?
Jun
6
answered Eigenvalues of power of matrices
Jun
6
comment Sturm-Liouville - differential equations (eigenvalues/eigenfunctions)
@OlindaFernandes Note that when the system has a non-trivial solution, one equation must be a multiple of another. So I solved equation II, using that a solution to $-ak + b\ell = 0$ is given by $a = \ell$, $b = k$.
Jun
6
answered Largest eigenvalue of a graph
Jun
6
answered A question of the property of positive definite matrix
Jun
6
revised Sturm-Liouville - differential equations (eigenvalues/eigenfunctions)
deleted 5 characters in body
Jun
6
reviewed Reject suggested edit on Sturm-Liouville - differential equations (eigenvalues/eigenfunctions)
Jun
6
reviewed Approve suggested edit on What was the initial velocity in the y direction vx = 3.6 m / s * cos 18 °?
Jun
6
answered Need help with difficult extra credit analysis question
Jun
6
answered Eigenvectors orthogonal to $j$
Jun
6
reviewed Approve suggested edit on merging the equations of the line
Jun
6
answered Affine transformation, if $L_1, L_2 - $ skew lines, $f(L_1), \ f(L_2) $ are parallel, then $f$ is not injective
Jun
6
reviewed Approve suggested edit on If quadrilateral ABCD = quadrilateral PQRS, then {A,B,C,D}={P,Q,R,S}
Jun
6
comment Decreasing sequence in a normed space
As $|x_n| = (|x_n|^p)^{1/p}\le (\sum_{k=1}^\infty |x_k|^p)^{1/p} = \|x\|_p$.
Jun
6
reviewed Approve suggested edit on irreducible-polynomials tag wiki
Jun
6
answered Decreasing sequence in a normed space