Reputation
Top tag
Next privilege 75 Rep.
Set bounties
Badges
1 9
Newest
 Enthusiast
Impact
~980 people reached

  • 0 posts edited
  • 0 helpful flags
  • 8 votes cast
Apr
11
comment Is there a way to update the inverse of a sum of two matrices following a rescaling of one of them?
You can use the following : $(A + gB)^{-1} = ((AB^{-1} + gI)B)^{-1} = B^{-1} (AB^{-1} + gI)^{-1}$
Apr
11
awarded  Enthusiast
Mar
27
comment generalized Bonferroni inequalities?
Write down the formula for $P(\cup_{i=1}^n A_i)$ using the inclusion-exclusion principle. Now if you truncate the sum after an even (odd) number of terms you get a lower (upper) bound.
Mar
27
comment positive definite of a matrix(diagonal decay)
See Sylvester's Criterion
Mar
21
awarded  Commentator
Mar
21
comment Chernoff vs Berry-Esseen
@Did Thanks. Updated now!
Mar
21
revised Chernoff vs Berry-Esseen
added 683 characters in body
Mar
21
revised Chernoff vs Berry-Esseen
added 683 characters in body
Mar
21
revised Chernoff vs Berry-Esseen
added 683 characters in body
Mar
21
revised Chernoff vs Berry-Esseen
added 683 characters in body
Mar
20
comment Chernoff vs Berry-Esseen
Could you please explain where I am wrong? Is your concern the following : $\lim_{n\rightarrow \infty} P[(S_n - n\mu)/\sqrt{n} \leq z] = \Phi(z/\sigma)$ only when $z$ is a constant and does not vary with $n$.
Mar
19
revised Chernoff vs Berry-Esseen
edited tags
Mar
18
revised Chernoff vs Berry-Esseen
added 1 character in body
Mar
16
answered Convergence in Distribution implies convergences almost surely
Mar
13
awarded  Editor
Mar
13
comment Prove a sum of fractions less than a value
sum of first five terms < 1, sum of last ten terms < 1
Mar
13
comment Markov Chain Snakes and Ladders
Let $p_s(t)$ be the prob you reach 9 in at most t steps from s. Then $p_3(4) = 0.5 p_4(3) + 0.5 p_5(3) = ...$
Mar
13
comment Markov Chain Snakes and Ladders
If you say so, the matrix P is correct except (8,2) should be 1 not (8,1)
Mar
13
comment Markov Chain Snakes and Ladders
Do you consider moving from 4 to 7 or 8 to 2 as a step? I would think that the number of steps should be equal to the number of tosses.
Mar
11
awarded  Curious