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visits member for 1 year, 11 months
seen Jun 11 '13 at 21:02

Jul
2
awarded  Curious
Nov
24
awarded  Yearling
Jun
11
accepted Closure and pathwise connected
Jun
11
asked Closure and pathwise connected
Jun
10
asked Finding the correct formula for a sequence
Jun
10
accepted Card game with 36 cards
Jun
10
comment Card game with 36 cards
$K$ can be any value between $1$ and $36$, correct? Or betwwen 1 and infnity?
Jun
10
comment Card game with 36 cards
I think it is $(i-1)\frac{7}{9}i\frac{2}{9}$ because $\frac{7}{9}$ is the probability not getting a heart
Jun
10
comment Card game with 36 cards
Thanks, if we consider it with replacement, what do you get for $P(K=i)$?
Jun
9
revised Card game with 36 cards
edited body
Jun
9
comment Card game with 36 cards
Oh yes, thanks. I'will edit it.
Jun
9
asked Card game with 36 cards
Jun
2
accepted Showing it is a joint probability density function
May
19
comment Showing it is a joint probability density function
Thanks, how can things like $P[X=1/2,Y=1/2]$, $P[X=Y]$ and $P[x\le 1/2, Y\le 1/2]$ expressed using the integrals? I know that we con da it using the cumulative distributin function F(x,y) but I do not know how.
May
18
comment Showing it is a joint probability density function
Do you also have an idea for the cumulative distributions?
May
18
asked Showing it is a joint probability density function
May
13
accepted Order topology neighborhood
May
13
comment Order topology neighborhood
Ok, in the case of $\langle 1,1\rangle$: $a=0: (0,b]\times \{1\}$ $a>0: (a,1]\times [0,1]$ together with $\{a\}\times (0,b]$ I do not know if these are correct. The last thing is if could explain the cases $\langle x,0\rangle$ and $\langle 0,x\rangle$ a little bit more in detail.
May
13
comment Order topology neighborhood
First of all, thank you for your help. Secondly, why exactly do you use the notation $<>$ for elements in $Z$, is this simply to distinguish from the other intervals $()$ or is there a deeper meaning? Thirdly, in the two cases you consider in the end, why only for $a$ and not also for $b?$. Fourthly for $<1,1>$ I get $(<a,b>,<1,1>]$, but which cases do I need to consider now? Fifthly, what about $<x,0>$ and $<0,x>$, are these intervals special cases of the cases we already considered?
May
11
accepted Length of life of a fire detector