644 reputation
39
bio website rbribeiro.wordpress.com
location Brazil
age 26
visits member for 2 years
seen 9 hours ago

Eles passarĂ£o... Eu passarinho...


Oct
19
answered Random variables with all moments. Is this statement true?
Oct
14
awarded  Yearling
Sep
28
comment How to prove the binomial theorem
You could try induction. Suppose this is true for n and write the sentence for n+1 as a product. Then apply the formula for n and expand...
Sep
20
comment Every measure of natural numbers and the power of natural numbers as their sigma algebra looks like this…
De nada! Sem problemas! =)
Sep
20
answered Every measure of natural numbers and the power of natural numbers as their sigma algebra looks like this…
Sep
16
answered Doob's decomposition and submartingale with bounded increments
Sep
7
comment How to work with the mode of a probability mass function
You are right! I edited my answer! ;)
Sep
7
awarded  Critic
Sep
6
answered How to work with the mode of a probability mass function
Sep
6
answered In how many ways 15 people be chosen for 4 distinct positions
Sep
4
comment How to show these two random variables are not equal with positive probability?
haha, sign! My english is terrible! You didn't fail to understand because the answer was wrong! I edited, but it isn't complete, yet. But can illustrate the argument.. Thanks!
Sep
4
revised How to show these two random variables are not equal with positive probability?
added 619 characters in body
Sep
4
answered Product measurable functions
Sep
4
answered Expected value equal to expected value of expected value squared?
Sep
3
comment How to show these two random variables are not equal with positive probability?
This event is in the event $X_1$ and $X_2$ have the same signal, once the left side of the equality is positive.
Sep
3
comment Generating a weighted random graph with a correlation between degrees per edge and edge weight
Maybe this could help: arxiv.org/abs/1302.3385 It is a model of preferential attachment with weights...
Sep
3
answered How to show these two random variables are not equal with positive probability?
Aug
30
comment what is the most easy to read Algebraic Geometry book?
Hartshorne is the best reference but it isn't the easier book about the subject.
Aug
30
answered what is the most easy to read Algebraic Geometry book?
Aug
29
comment Hit or Miss Method Question
oh! You right! I edited my answer! =)