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seen Aug 31 '12 at 23:18

Apr
3
accepted convergence of sequence of random variables
Apr
3
accepted combination of brownian motion
Apr
3
accepted square root of symmetric matrix and transposition
Apr
3
accepted if eigenvalues are positive, is the matrix positive definite?
Apr
3
revised leading and lagging moving average indicator
added 83 characters in body
Apr
3
asked leading and lagging moving average indicator
Mar
30
asked convergence in higher order mean implies convergence in lower order mean
Feb
25
accepted example on variance of stochastic processes
Feb
25
comment example on variance of stochastic processes
got it. linearity of covariance was new to me.
Feb
25
asked example on variance of stochastic processes
Feb
13
comment spectrum and phase of function in frequency domain
Got it guys. Once I have the fourier transform computed analytically, I can easily set up the complex vector and compute the amplitude and phase. R has support for complex numbers ugrad.stat.ubc.ca/R/library/base/html/complex.html and includes functions for finding amplitude and phase. Thanks all.
Feb
13
accepted spectrum and phase of function in frequency domain
Feb
13
comment spectrum and phase of function in frequency domain
Sweet. Do you happen to come across function in R that does this similar to matlab?
Feb
13
comment spectrum and phase of function in frequency domain
reference: en.wikipedia.org/wiki/Fourier_transform
Feb
13
revised spectrum and phase of function in frequency domain
added 96 characters in body
Feb
13
comment spectrum and phase of function in frequency domain
Thanks. But I am using R and I don't think it has these functions. I am looking for mathematical formula for finding magnitude/phase so that I can write my functions.
Feb
13
revised spectrum and phase of function in frequency domain
edited tags
Feb
13
asked spectrum and phase of function in frequency domain
Dec
11
comment problem on strong law of large numbers
Excellent. So we apply SLLN on the denominator and CLT on the numerator.
Dec
11
accepted problem on strong law of large numbers