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Apr
23
reviewed Leave Open Recommend guide book of algebraic geometry
Apr
23
reviewed Leave Open Real Analysis, Folland problem 6.1.11 $L^p$ spaces
Apr
23
reviewed Leave Open Newton's Law of Cooling
Apr
23
reviewed Leave Open Supercompact cardinals and $H_{\theta^+}$
Apr
23
reviewed Close Why tensor product is used in local expression of Riemannian metric?
Apr
23
reviewed Leave Open Current differential equation
Apr
20
comment Is mathematical history written by the victors?
You can send it to tuvegeto137@gmail.com .
Apr
19
comment Is mathematical history written by the victors?
Oh, hello! Nice to see you came into contact with Claude Lobry. Is he still working at Sophia-Antipolis? Or is he already retired? I'm certainly interested in a copy. Just tell me when you can send it to me.
Apr
17
comment Simplify/expand $\ln \left(\sum^n_{i=1}x_i^{\theta-1}\right)$
$(\theta-1)\ln\left( (\sum^n_{i=1}x_i^{\theta-1})^{1/(\theta-1)} \right)$
Apr
10
comment Solving an inequality using the Mean Value Theorem
Can you really not do better for the lower bound?
Mar
9
comment Find $\max_{0 < \beta < 1/2} \{\min \{\alpha - \beta, 1 - 2\beta, \beta \alpha\}\}$
A constraint that is given by an inequality can always be turned into an equality by introducing an extra variable. So $g(x)>0$ becomes $g(x)-e=0$ with $e>0$. Note however, that you'll always have an inequality, even though it is simpler to analyse. $e$ in this case is called an excess variable, because it measures exactly how much bigger $g(x)$ is compared to $0$.
Mar
2
comment Financial mathematics - earning compound interest
You forgot to factor in the interest gained at time 3.
Feb
17
reviewed Reject Find orthogonal projection to x-y, x-z, and z-y, plane
Feb
17
reviewed Reject wiener-measure tag wiki excerpt
Feb
17
reviewed Reject topological-rings tag wiki excerpt
Feb
17
reviewed Reject logistic-regression tag wiki
Feb
17
reviewed Reject integral-geometry tag wiki excerpt
Jan
21
comment Probability that the Series ends in $6$ games in the World series.
What if X loses the second and fourth game but wins every other game?
Jan
17
answered Calculate: $\lim_{x\to 0} \frac{f(x^2)-f(0)}{\sin^2(x)}$.
Dec
31
comment Prove: Expectation value is the weighted average
It's not clear what you mean with the notation in the right hand side. Provide some context please.