7,398 reputation
12656
bio website fa.its.tudelft.nl/~teuwen
location Delft, Netherlands
age 28
visits member for 4 years, 2 months
seen Oct 6 at 20:46

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


Aug
23
comment Convex sequences and Integral representation for the generating function
Okay, I see. By the way, I still didn't give an argument why $L$ is bounded, but the convexity does that (I think). I will think about it a little more, probably it is fixable one way or the other. Do you know of the existence of the Hausdorff Moment Problem? Your problem made me think of that.
Aug
21
answered Convex sequences and Integral representation for the generating function
Aug
19
comment Good 1st PDE book for self study
Consider it done.
Aug
19
revised Good 1st PDE book for self study
Added links.
Aug
19
answered Good 1st PDE book for self study
Aug
19
comment Measurable Functions behaviour on $\mathbb{R}^{2}$
What do you call a "better" example?
Aug
19
comment Measurable Functions behaviour on $\mathbb{R}^{2}$
Ah, yes, the function you construct is a common counterexample (In PDE), that I didn't think of that myself :). Nice! It looks correct to me. It is a different approach than mine, so I'm curious if mine works too.
Aug
18
comment Free introductory resources for learning algebra?
I assume you mean the version that isn't called "abstract algebra" and is about groups and such (Lang's book is about that) For self-study I'd suggest you take a look at the Schaum's series about algebra, they are cheap, full of examples and exercises.
Aug
18
revised Invariant Subspaces (Hardy Space)
added 121 characters in body; added 6 characters in body
Aug
18
answered Measurable Functions behaviour on $\mathbb{R}^{2}$
Aug
17
awarded  Supporter
Aug
17
awarded  Teacher
Aug
17
revised Is the closedness of the image of a Fredholm operator implied by the finiteness of the codimension of its image?
Using LaTeX.; added 6 characters in body; added 6 characters in body
Aug
17
answered Is the closedness of the image of a Fredholm operator implied by the finiteness of the codimension of its image?
Aug
14
awarded  Editor
Aug
14
revised Invariant Subspaces (Hardy Space)
added 82 characters in body
Aug
13
awarded  Student
Aug
12
asked Invariant Subspaces (Hardy Space)