456 reputation
39
bio website fa.its.tudelft.nl/~teuwen
location Delft, Netherlands
age 28
visits member for 2 years, 6 months
seen Jun 9 '13 at 12:28

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


Jul
2
awarded  Curious
Apr
26
awarded  Notable Question
Jan
25
awarded  Yearling
Feb
6
awarded  Popular Question
Jan
25
awarded  Yearling
Apr
7
comment How do I use the result of Solve in a function definition?
@SjoerdC.deVries Well, when at the same time when I call a function. So not only if I execute the whole worksheet.
Apr
7
accepted How do I use the result of Solve in a function definition?
Apr
7
comment How do I use the result of Solve in a function definition?
@SjoerdC.deVries Thanks. I know this, but the way I made it set Z to a particular value, but I have fixed it in another way.
Apr
6
comment How do I use the result of Solve in a function definition?
@RM Right, good point! Can you explain why I cannot use capital letters as function names?
Apr
6
comment How do I use the result of Solve in a function definition?
Thanks, I will try this, but I think there was a problem when $z$ was already set (by running it once with different amax). Is there a way to reset the value of z before doing a computation?
Apr
6
asked How do I use the result of Solve in a function definition?
Mar
11
accepted Indeterminate expression. Where?
Mar
11
asked Indeterminate expression. Where?
Mar
10
comment Why does Mathematica give the wrong answer when integrating?
@Rolf Cool stuff!
Mar
8
awarded  Nice Question
Mar
8
accepted Why does Mathematica give the wrong answer when integrating?
Mar
8
comment Why does Mathematica give the wrong answer when integrating?
Right... That implies that I have to check a few hundred of them with many parameters :-). Of course, any program can have a bug, but it still is very annoying.
Mar
8
comment Why does Mathematica give the wrong answer when integrating?
Hmm, right. But how do I fix this? My project doesn't work when this is wrong! And how can I now trust the output? I can't check all these horrendous integrals by hand, I was using Mathematica to not make mistakes.
Mar
8
comment Why does Mathematica give the wrong answer when integrating?
What do you mean? I use 8.0.4.
Mar
8
asked Why does Mathematica give the wrong answer when integrating?