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bio website linkedin.com/in/gt6989b
location New York, NY
age 35
visits member for 2 years, 7 months
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Mar
21
comment Is excess kurtosis for a mixture of two normal distributions with the same means and different variances always positive?
@brittUWaterloo I'm sorry, no immediate thoughts on it.
Mar
20
awarded  Tenacious
Mar
20
comment Bound for probability of the intersection of a set of events
@EricTowers you supposedly want something converging to $0$ as $N \to \infty$, like OP's product, which results in $p^N$...
Mar
20
comment How many skew symmetric matrices are possible?
@Sabyasachi of course it must be square. But there is still uncountably infinitely many.
Mar
20
comment How many skew symmetric matrices are possible?
@Sabyasachi $A^T = -A$ (as opposed to "just" symmetric, which is $A^T = A$)
Mar
20
answered How many skew symmetric matrices are possible?
Mar
20
comment Find out when a function has completed one revolution about the origin
You could try projecting the position of the body onto the $xy$-plane, say, and then find the angle of the projection to the origin in the $xy$-plane. Then you could run a root finder (something like Bisection Algorithm) looking for the first value of $f$ above your starting angle.
Mar
20
answered Median $\neq$ Expectation
Mar
20
answered sum up to nth term with fraction in the power
Mar
20
answered Help with integral with $\arcsin x$.
Mar
20
revised Help with integral with $\arcsin x$.
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Mar
20
revised Using the polar form of $1 + i$ and $\sqrt3 + i$ to deduce $\cos (\frac{\pi}{12}), \sin(\frac{\pi}{12})$
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Mar
20
comment Functional Analysis, $L^p$ spaces
@ChaoukiBenSaid You don't need to compute the integral, just prove that it converges. I would try the substituion $u=x^{1-\alpha p}$ which should transform this to a more familiar $\int \left(1+u^c\right)^{-p} du$, where $c = \frac{\beta-\alpha}{1-\alpha p}$ (plus you have to analyze the case $\alpha p = 1$ separately.
Mar
19
revised Diagonal of a matrix in different basis
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Mar
19
answered Solve a product of binomials raised to a power for x
Mar
19
revised probability question related to cards and poker
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Mar
19
comment Is $L=\{w\mid \text{ same number of 010 and 101}\}$ regular?
@ThomasAndrews Thanks for the clever edit, I learned of $\mid$. thank you
Mar
19
revised Is $L=\{w\mid \text{ same number of 010 and 101}\}$ regular?
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Mar
19
answered Prove Inverse Function
Mar
19
comment center mass of the solid
Typically, $$ \text{mass} = \iiint_\Omega \rho(x,y,z) dV, $$ where $\Omega$ denotes your region. Please provide some thoughts on the problem. We will be glad to furnish more hints.