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Conrado Costa
  • Member for 7 years, 3 months
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  • rio de janeiro
19 votes
Accepted

Expressing the infinite sum $1 + 22 + 333 + 4444 + \dotsb$

10 votes
Accepted

Norm of a left shift operator

8 votes
Accepted

Expected number of steps for reaching $K$ in a random walk

7 votes
Accepted

Help with a limit of an integral: $\lim_{h\to \infty}h\int_{0}^\infty{{ {e}^{-hx}f(x)} dx}=f(0)$

7 votes

Quadratic variation of Brownian motion and almost-sure convergence

6 votes

What is a formal definition of 'randomness'?

6 votes
Accepted

How Independence and Mutually Exclusive connected?

6 votes
Accepted

Dominated convergence theorem for complex-valued functions?

5 votes
Accepted

Problem with Justifying the Formula for First Order Seperable Differential Equations

4 votes
Accepted

Show that $|F_{X,Y}(x,y)|^2\leq F_X(x)F_Y(y)$

4 votes

covariance function for Brownian motion

4 votes
Accepted

Proof: $Y$ stochastically dominates $X$ implies $E[\phi(Y)]\geq E[\phi(X)]$ for increasing $\phi$

4 votes
Accepted

sign of the conditional expectation

4 votes

Under what conditions does a specified conditional distribution exist

3 votes
Accepted

Intuition on Martin-Löf-Test for finite strings

3 votes

Norm of adjoint

3 votes
Accepted

Expected number of coin flips for heads

3 votes

Which statement "must be false"?

3 votes

If X,Y and Z are independent, are X and YZ independent?

3 votes

what is the radius of convergence of power series $\frac{z^2}{z}$?

3 votes
Accepted

Prove that if $B = \{x-y : x,y \in A\}$, where $A$ is a Borel measurable subset of $R$ with positive measure

3 votes

Prove that the following function is $C^{\infty}$

3 votes

Monotone class theorem

3 votes
Accepted

Strongly equivalent metrics are equivalent

3 votes
Accepted

Necessary and suficient condition for a sequence of $L^2([0,1])$ to be a basis.

3 votes
Accepted

If $f:\mathbb R^n\to\mathbb R$ is twice continuously differentiable, then $\nabla f$ is Lipschitz continuous

3 votes
Accepted

Regular Conditional Probability given $X$

2 votes
Accepted

Continuous distribution and independence

2 votes

Radon-Nikodým (write the density as a limit)

2 votes

How do we know the joint probability distribution measure is valid?

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