7,124 reputation
12352
bio website fa.its.tudelft.nl/~teuwen
location Delft, Netherlands
age 27
visits member for 3 years, 8 months
seen Aug 5 '13 at 10:51

About me

I'm a PhD candidate in analysis (harmonic analysis). I have a Master of Science degree in mathematics (analysis).

I am interested in many topics in analysis, but in particular: harmonic analysis, functional analysis, operator theory and special functions.

My email address is jonasteuwen@gmail.com.

I would appreciate it if you would correct my spelling and grammatical errors.


Me elsewhere


Dec
13
answered Are polynomials dense in Gaussian Sobolev space?
Nov
14
awarded  Popular Question
Nov
11
comment On the regularity of the Laplace equations and tensor products and such
Does the lack of answers imply that my question is too stupid or that there is nobody that can answer it here? If so, would it more appropriate to ask on MO?
Oct
28
awarded  Custodian
Oct
28
reviewed Reviewed Minimising an integral with unspecified endpoints
Oct
28
reviewed Reviewed Generously Feasible?
Oct
22
comment Multiplicative formula for Fourier transforms
Sure, $x^{-2}$ is integrable right? The only issue is $0$. So add the $1$ and done. Fubini only requires integrability.
Oct
21
comment Why decimal expansion of $e$ has two copies of $1828$
The comment of joriki is making me paranoid. Jasper is onto something.
Oct
20
awarded  Popular Question
Oct
19
comment Fourier Series: Integral of a Sum or Sum of Integrals?
@MattN. Badges are all I live for.
Oct
17
comment Fourier Series: Integral of a Sum or Sum of Integrals?
@MattN. I don't think so. This is more PDE-like things.
Oct
14
comment Fourier Series: Integral of a Sum or Sum of Integrals?
This does not seem to answer the question.
Oct
14
answered Fourier Series: Integral of a Sum or Sum of Integrals?
Oct
2
asked On the regularity of the Laplace equations and tensor products and such
Sep
21
awarded  Custodian
Sep
9
comment Tablet for reading textbooks and writing math by hand?
Also, your drawings are pretty damn good if you don't have a stylus... Also with.
Sep
9
comment Tablet for reading textbooks and writing math by hand?
As for the "taking with you". You can put the files in a dropbox folder and the iPad client synchronizes them when you need.
Sep
5
comment Completeness of BMO without duality to $H^1$
That's what I say. In the quotient space. Maybe a bit "strange", but all the constants are now in the class $[0]$. Whatever, just get rid of the average and work with those functions.
Sep
4
comment Completeness of BMO without duality to $H^1$
@AlexanderAmenta I'm not sure what the problem is. As I am a bit ill al the moment, I still have tried to add some information :-). The idea is that it can only be a Banach space if we have a full norm. That means we should divide out that constants. In practice this means that taking the quotient gives us the normal BMO-norm for non-constants and the constant itself for constants. So, you are fine by just considering functions with average 0. Then no worrying about equivalence classes.
Sep
4
revised Completeness of BMO without duality to $H^1$
added 3032 characters in body