bio  website  regularize.wordpress.com 

location  Braunschweig, Germany  
age  36  
visits  member for  4 years, 6 months 
seen  41 mins ago  
stats  profile views  1,886 
Professor at TU Braunschweig.
Area: Inverse problems, regularization theory, applied functional analysis, mathematical image processing.
2d

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Hadamard / matrix product adjoint
Ok, I see now. I think a better fit for this question would be scicomp.stackexchange.com. Anyway: The adjoint is defined by $\langle A^* y,x\rangle = \langle y,Ax\rangle$. You do adjoints one by one from outside to inside. 
2d

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Hadamard / matrix product adjoint
Sorry, but this does not make sense. What is the Hadamard product of the matrix S and the vector Fx? 
2d

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Hadamard / matrix product adjoint
Err... So x is a matrix? 
2d

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Hadamard / matrix product adjoint
I could not parse your definition of the operator A. If D and S are matrices, do you build the Hadamard product with the matrix of the Fourier transform? 
Mar 26 
comment 
Convergence in energy of bounded (semi)subharmonic functions
Sorry for the late reply: I guess the best thing would be to write an answer yourself so that this is kept for the records. 
Mar 26 
reviewed  Approve Are all rational exactly solvable differential equations known? 
Mar 26 
reviewed  Close Closed Form Solutions To Simple Iterated Polynomial Building Blocks 
Mar 24 
awarded  Nice Answer 
Mar 24 
reviewed  Leave Open Which way for reading the proofs? 
Mar 24 
answered  Which way for reading the proofs? 
Mar 23 
reviewed  Leave Closed If a polynomial $p(z)$ omits a value, then $p(z)\dfrac{(1e^{i\psi})}{n}zp^{\prime}(z)$ also omits that value 
Mar 23 
reviewed  Leave Open Analysis of Sobolev spaces 
Mar 17 
comment 
Fredholm integral with functions constrained to [0;1]
For some reason I confused $g$ and $f$. Of course $f$ should be the unknown… Corrected. 
Mar 17 
revised 
Fredholm integral with functions constrained to [0;1]
corrected variable names 
Mar 16 
comment 
Fredholm integral with functions constrained to [0;1]
The most simple thing that comes to mind is the projected gradient method, see my update. 
Mar 16 
revised 
Fredholm integral with functions constrained to [0;1]
added 361 characters in body 
Mar 16 
answered  Fredholm integral with functions constrained to [0;1] 
Mar 10 
reviewed  Leave Open More recently published comprehensive reference on inequalities in the spirit of HardyLittlewoodPólya 
Mar 6 
awarded  Necromancer 
Mar 6 
revised 
Some questions about Invexity
Formatted as a link. 