Uri Cohen

133 reputation

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	age	36
visits	member for	2 years, 1 month
	seen	Apr 21 at 4:12
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	133 reputation	bio	website		visits	member for	2 years, 1 month
3 badges		location			seen	Apr 21 at 4:12

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Apr 3	accepted	Eigenvalues of a mean correlation matrix (integral over correlation matrices with arbitrary density)
Apr 3	revised	Eigenvalues of a mean correlation matrix (integral over correlation matrices with arbitrary density) Minor fix
Apr 2	answered	Eigenvalues of a mean correlation matrix (integral over correlation matrices with arbitrary density)
Mar 13	revised	Eigenvalues of a mean correlation matrix (integral over correlation matrices with arbitrary density) added 203 characters in body
Mar 12	revised	Eigenvalues of a mean correlation matrix (integral over correlation matrices with arbitrary density) added 13 characters in body
Mar 12	asked	Eigenvalues of a mean correlation matrix (integral over correlation matrices with arbitrary density)
Aug 7	accepted	Convergance of a system to Boltzmann distribution
Aug 7	revised	Convergance of a system to Boltzmann distribution added 8 characters in body
Aug 7	awarded	Editor
Aug 7	revised	Convergance of a system to Boltzmann distribution Made clear X is finite dimension
Aug 7	comment	Convergance of a system to Boltzmann distribution Thanks, I meant finite dimension for X.
Aug 7	asked	Convergance of a system to Boltzmann distribution
Mar 13	awarded	Scholar
Mar 13	accepted	Normal distribution of x, xdot
Mar 4	comment	Normal distribution of x, xdot With the histogram I presented I have 120 seconds sampled using 20K samples/sec, but I have much more data.
Mar 4	comment	Normal distribution of x, xdot This is a biological measurements from cells, and x is the voltage which fluctuate quite randomly, due to external (non-measured) events. No observable oscillations there!
Mar 3	comment	Normal distribution of x, xdot Ok, this is experimental measurements so obviously I don't have access to xdot, just to (x(t+dt)-x(t))/dt for dt of my choise (sampling frequency). I believe the variance of x is fixed as t increases, which is inconsistent with a Wiener process. I'll recheck this.
Mar 3	comment	Normal distribution of x, xdot The case here is of a complex dynamic system which is indeed bounded, so your comment is very interesting. Can you suggest some intuition why do such relation occur (relation by Fourier transform)?
Mar 3	comment	Normal distribution of x, xdot Normal distribution appear in many diverse cases due to CLT, as you said, but the most interesting bit here is that (x, xdot) is joinly distributed as gaussian. What kind of process randomly pertubate both x, xdot?
Mar 3	awarded	Student