Reputation
Next tag badge:
99/100 score
45/20 answers
Badges
17 147 334
Newest
 closed-form
Impact
~2.1m people reached

2d
comment Laplace vs Fourier density representation of a positive rv
"the Laplace [transform] is said to be more useful" Source?
Aug
25
comment Example of a bounded simple process $A_t$ that changes value only once s.t. $\int_0^t A_s dB_s$ doesn't have normal distribution?
Any $A_s=\mathbf 1_{s<T}$, with $T$ random, works.
Aug
25
comment Disjoint increments of Poisson mixture process are memory-less
The counterexample is when $\lambda_0/\lambda_1\to0$, $N(t_1)\to\infty$, and $p$ fixed, of course.
Aug
24
comment solve non homogeneous recurrence relation with only '1' as root of its equation
"all in vain" Very surprising: first there are tons of examples of this on the site, second, direct analysis shows that if $f(n)=f(n-1)+g(n)$ for every $n$ then $f(n)=f(0)+\sum\limits_{k=1}^ng(k)$ for every $n$ (here $g(n)=3n-1$).
Aug
24
revised Limit of $\frac{1-2+\cdots+(2n-1)-2n}{\sqrt{ (n^2+1)}+ \sqrt{ (n^2-1)}}$
added 30 characters in body; edited tags; edited title
Aug
24
revised Show that $\mu(f)\mu(1/f)\geq\mu(\Omega)^2$
added 1 character in body; edited title
Aug
24
comment Show that $\mu(f)\mu(1/f)\geq\mu(\Omega)^2$
Please try to avoid noninformative titles.
Aug
24
comment If $\mu(|f_n|^p)$ is bounded and $f_n\to f$ in measure then $f_n\to f$ in $L^1$
Please try to avoid noninformative titles.
Aug
24
revised If $\mu(|f_n|^p)$ is bounded and $f_n\to f$ in measure then $f_n\to f$ in $L^1$
edited title
Aug
24
reviewed Leave Closed Is this true: Every open set $A$ contains a neighborhood whose closure is a subset of $A$.
Aug
24
reviewed Close Systems of Linear Equations- number of solutions
Aug
24
reviewed Close Similar Matrices and their Jordan Canonical Forms
Aug
24
reviewed Close about the proof of proposition 2.2.1 in grothendieck's tohoku paper
Aug
24
reviewed Close Finding equation for hyperbola given 2 points and center
Aug
24
reviewed Close How to derive the complex Fourier series of $s(t) = 1-e^{-2t}$?
Aug
24
reviewed Close Topology induced by discrete metrics and topology induced by singleton
Aug
24
reviewed Close Can an element in a Noetherian domain have arbitrarily long factorizations?
Aug
24
reviewed Close Determinant of a band-wise matrix with sine/cosine of an argument
Aug
24
reviewed Close How to integrate $\frac{\sec x}{ \tan^2 x}$
Aug
24
reviewed Close How can I calaculate this complex series?