127,610 reputation
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bio website math.ubc.ca/~israel
location Richmond, Canada
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visits member for 3 years, 5 months
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I'm an Emeritus Associate Professor of Mathematics at University of British Columbia and an Optimization Algorithms Researcher at D-Wave Systems in Burnaby BC


Aug
29
answered Prove that a normal matrix is unitary/Hermitian
Aug
29
comment Avoiding initial guess in Newton Method for nonlinear systems
Have you tried using existing software, e.g. fsolve in Maple?
Aug
29
answered Greatest value of digits from adding numbers
Aug
29
comment Finding a probability density function of a function of three dependent random variables
@Ram You said $X$, $Y$ and $Z$ are independent.
Aug
29
answered Finding a probability density function of a function of three dependent random variables
Aug
29
comment Integration of $\int_0^{2\pi}(e^{\cos x}\cos x\sin x) \,dx$
You really didn't need that last step. $e^{\cos x} \cos x \sin x$ is an odd function.
Aug
29
answered Proving the following relation
Aug
29
revised In an irreducible, aperiodic, null-recurrent Markov chain holds $\sum_n p_{ij}^{(n)} = \infty$
added 255 characters in body
Aug
29
answered In an irreducible, aperiodic, null-recurrent Markov chain holds $\sum_n p_{ij}^{(n)} = \infty$
Aug
29
answered Independent cycles in undirected graph
Aug
29
comment Looking for a matrix A(t)
Or, as I suggested, an upper or lower triangular one.
Aug
29
answered Looking for a matrix A(t)
Aug
29
answered When does $(e^a)^b = e^{ab}$ hold?
Aug
29
answered Distribution of sample median for a discrete random variable
Aug
29
comment Upper bound on the covariance of two gamma processes?
So what precisely is the question, then?
Aug
29
comment Upper bound on the covariance of two gamma processes?
For any two random variables, the covariance is at most the product of the standard deviations, and this maximum is attained exactly when the two random variables are almost surely equal. So to get maximum covariance, just make your second process the same as the first.
Aug
29
comment Upper bound on the covariance of two gamma processes?
I assume you mean the product of their standard deviations, not of their variances.
Aug
29
answered Integral of the Square of the Elliptic Integral
Aug
29
answered algorithm to see if some sign(s) of terms will sum to zero
Aug
29
answered For any series that diverges, does there exist a sequence that converges to 0 yet the product diverges