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Jochen Wengenroth's user avatar
Jochen Wengenroth's user avatar
Jochen Wengenroth's user avatar
Jochen Wengenroth
  • Member for 11 years, 4 months
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I am a mathematician at the Unversität Trier (Germany).

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All Questions Answers
Score Newest
answer
55
Is every sigma-algebra the Borel algebra of a topology?
Feb 8, 2012
question
32
Did ancient mathematicians know Euler's characteristic for convex polyhedra?
Jan 14, 2014
question
32
Hahn-Banach theorem with convex majorant
Oct 26, 2015
answer
27
Is a normed space which is homeomorphic to a Banach space complete?
Dec 7, 2016
answer
21
Are weak and strong convergence of sequences not equivalent?
Mar 1, 2012
answer
21
Prominent non-mathematical work of mathematicians
Aug 23, 2020
answer
20
A quantity measuring the separability of Banach spaces
Feb 24, 2021
question
19
The list of problems for Grothendieck's thesis
Jun 14, 2015
question
18
Poincare lemma for non-smooth differentiable forms
Sep 9, 2014
answer
18
Uniformly integrable sequence such that a.s. limit and conditional expectation do not commute
Mar 15, 2013
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16
Finite dimensional subspace of $C([0,1])$
15
Spectral theorem for unbounded self-adjoint operators on REAL Hilbert spaces
12
Can we prove the chain rule without using an artificial trick?
12
Prove the set of sequences $c_0$ which converge to zero in $l_{\infty}$ is closed.
11
If $f(x) + f'(x) + f''(x) \to A$ as $x \to \infty$, then show that $f(x) \to A$ as $x \to \infty$

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