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visits member for 4 years, 4 months
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Just a layman and slow learner. Thank you for your enlightenment and patience, and for giving me the best memory in my life.


1d
asked Approximate the unit ball in an infinite-dimensional Hilbert space, by compact sets?
Dec
15
asked If $|f_i(x_1) - f_i(x_2)| \leq a$ for all $f_i$'s, does $ | \min_i f_i(x_1) - \min_i f_i(x_2) | \leq a? $
Dec
13
asked Meaning of “within a constant factor from”?
Dec
5
asked Condition on $f$ for $f(x+y) \leq f(x) + f(y)$?
Dec
5
asked Application of Jensen's inequality
Dec
1
asked Relative complement and subtraction.
Dec
1
asked Can a randomized rule induce a random measure on the action space?
Nov
24
asked If $T(v)=0$ for all $v \in V$, then $T=0$.
Nov
14
asked When can $\sup_x$ and $\sup_y$ be swapped?
Nov
14
answered Is it true that $ \sup_x (f(x) - g(x)) \geq \sup_x f(x) - \sup_x g(x)? $
Nov
14
asked Is it true that $ \sup_x (f(x) - g(x)) \geq \sup_x f(x) - \sup_x g(x)? $
Nov
10
asked When can we take $A$ somehow out of $\langle x,Ay\rangle$?
Nov
5
asked Can Cauchy Schwarz inequality be proven using Jensen's inequality?
Nov
5
asked Writing clear proofs involving multiple theorems and conditions
Nov
5
asked If $X < a$, $EX < a$?
Nov
4
asked Independence and uncorrelatedness between two normal random vectors.
Nov
4
asked Are two random vectors independent, iff every pair of components from each vector are independent?
Nov
4
asked Does a Pareto distribution always have variance?
Nov
3
answered For $E (X - EX)^2$ to exist, do we need $EX$ to exist and be finite?
Nov
3
asked For $E (X - EX)^2$ to exist, do we need $EX$ to exist and be finite?