Reputation
4,859
Top tag
Next privilege 5,000 Rep.
Approve tag wiki edits
Badges
2 17 51
Newest
 Revival
Impact
~75k people reached

Oct
26
reviewed Close Prove that $\sum_{i=1}^na_i\sum_{i=1}^na^{-1}_i\ge n^2$ and $\sum_{i=1}^na_i^2\ge\frac1n$
Oct
26
reviewed Close How can I prove that $\sup(\bigcup_{i \in I} A_{i}) =\sup\{\sup \,A_{i} : i \in I \}$?
Oct
26
reviewed Close Find $\lim_{n \to \infty} (0,9999+\frac{1}{\sqrt{n}})^n$ and $\lim_{n \to \infty} (1,00001-\frac{1}{n})^n$
Oct
26
reviewed Close Limit of the reciprocal of the mean harmonic
Oct
24
comment Normal distribution tail probability inequality
nice and easy...
Oct
24
comment Normal distribution tail probability inequality
so your approach is valid for $t\geq \sqrt{\pi/2}$. i do not know how to do it, so maybe, you start by assuming otherwise.
Oct
24
reviewed No Action Needed Normal distribution tail probability inequality
Oct
24
reviewed Approve process of $(a,b)R(c,d)\implies a\cdot b(b+c)=bc\cdot (a+d)$ being transistive relation..
Oct
17
reviewed Close $\dfrac1a+\dfrac1b=\dfrac1c$, $a, b, c \in \mathbb{N}$ with no common factor, find all solutions
Oct
17
reviewed Close Why is the reduced echelon form of a set of independent vectors, the identity matrix?
Oct
17
reviewed Close In what base does the equation $x^2 - 11x + 22 = 0$ have solutions $6$ and $3$?
Oct
17
reviewed Close Simple Combination Help!
Oct
17
reviewed Close Math homework, so much guessing work?
Oct
17
reviewed Close Stopping Time and Brownian Motion
Oct
17
reviewed Approve Simplify: $\sin \frac{2\pi}{n} +\sin \frac{4\pi}{n} +\ldots +\sin \frac{2\pi(n-1)}{n}$.
Oct
16
reviewed Close Integrate $\csc(x)^3dx $
Oct
16
reviewed Close Evaluate $ \int_0^\infty \cos(x)/\cosh(x) dx $
Oct
16
awarded  Yearling
Oct
14
revised Why is the canonical filtration of a Brownian motion left-continuous?
edited title
Oct
9
reviewed Approve Is this one bounded?