2,616 reputation
1142
bio website regularize.wordpress.com
location Braunschweig, Germany
age 35
visits member for 3 years, 6 months
seen 4 hours ago

Professor at TU Braunschweig.

Area: Inverse problems, regularization theory, applied functional analysis, mathematical image processing.


Apr
10
comment why quintics are Calabi-Yau?
I find the question "Why quintics are Calabi-Yau" rather cryprtic. Would you mind to give some more information?
Apr
9
revised Determine noise distribution
edited tags
Apr
9
awarded  Revival
Apr
9
comment Adjoint operator of a Convex operator is convex
I didn't come across convex functions with values in an ordered normed space yet, but well, the adjoint is linear and this still implies convexity.
Apr
9
answered Interpretation of the integral “with respect to a plane wave” in terms of Radon transform
Apr
3
awarded  Nice Answer
Apr
3
comment Modulus of of continuity of a convolution operator with respect to Wasserstein metric
What are $dx|\theta$ and $x|\theta$? For $x-\theta$ to make sense, you that $\Theta$ is not just a metric space but has a linear structure. Or do you consider it to be a topological group?
Apr
2
comment how to complete arbitrary basis knowing 2 orthonormal vectors of Rd (d > 2)
Theoretically? Then it doesn't matter, completion exists. Practically? Choose random vectors. Anyway: Not suited here, better for math.SE.
Mar
21
awarded  Popular Question
Mar
19
comment What is exceptional about the prime numbers 2 and 3?
+1 for the strong law of small numbers!
Mar
19
comment What is exceptional about the prime numbers 2 and 3?
To nit-pick a bit: By this definition also 1 is prime.
Mar
19
comment An Interesting Optimization Problem
Looks more like a (discrete) optimization problem than a number theory problem…
Mar
10
comment “Paradoxes” in $\mathbb{R}^n$
Right - the cube is actually a simpler example than the simplex...
Mar
10
answered “Paradoxes” in $\mathbb{R}^n$
Feb
25
answered More than $n$ approximately orthonormal vectors in $R^n$
Feb
19
comment Why distributions as functionals?
@Alexander Shamov: That's some point... But well, "average" sounds pretty linear to me. More practically: A light sensor is basically collecting all the light that hits it and hence, measures the average (in the sense of arithmetic mean) light in that region. I do not know enough about other sensors but linearity sounds very reasonable to me.
Feb
18
awarded  Excavator
Feb
18
revised Finding the length of a cubic B-spline
Fixed TeX
Feb
10
awarded  Nice Answer
Feb
6
comment What is the best way to optimize this matrix equation
Is that the same problem that is solved by this MATLAB routine mathworks.de/de/help/stats/procrustes.html?