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 Feb 22 answered Might such a sequence of mathematical expectations be able to predict uncertain events? Feb 22 comment Might such a sequence of mathematical expectations be able to predict uncertain events? but what about $\delta^{bis}_{2}:=E(\big|-|X-E(X)|-\delta_1\big|)$ it's the symmetric part of the situation? Feb 22 comment Minimize combined variance of multiple measurements with known (but varying) variance "The measurements are of course correlated (as they measure the same property)! And I can also calculate a covariance matrix..." but do you suppose that errors of measurements are also correlated ? Feb 21 comment What is closed-form expression for $F(n)$ when $F(n)=F(n-1)+F(n-2)$ and $F(0)=a$,$F(1)=b$ and $a,b>0$? as I thought, but is there way to effectively search for them ? Feb 21 comment What is closed-form expression for $F(n)$ when $F(n)=F(n-1)+F(n-2)$ and $F(0)=a$,$F(1)=b$ and $a,b>0$? How to find a and b, if I have only given value of F(n) (without knowledge of n) ? Feb 21 comment What is closed-form expression for $F(n)$ when $F(n)=F(n-1)+F(n-2)$ and $F(0)=a$,$F(1)=b$ and $a,b>0$? great, I have value of $F(n)$ and have to find smallest $a,b>0$ your answer is going to be very helpful Feb 21 accepted What is closed-form expression for $F(n)$ when $F(n)=F(n-1)+F(n-2)$ and $F(0)=a$,$F(1)=b$ and $a,b>0$? Feb 21 asked What is closed-form expression for $F(n)$ when $F(n)=F(n-1)+F(n-2)$ and $F(0)=a$,$F(1)=b$ and $a,b>0$? Feb 16 accepted How to obtain estimate of covariance matrix that will be guarantee to be semi-positive define? Feb 14 comment What do $\pi$ and $e$ stand for in the normal distribution formula? and if we take \begin{align*}X&=\cos(2\pi V)\\Y&=\sin(2\pi V)\end{align*} and plot($X$,$Y$) we have beautiful circle Feb 13 comment Can the matrices $A$ and $I+A$ have the same determinant? det(A)=det(A+I)=0 if for all i and j, a[i,j]=0 except i=j=1 for which a[i,j]=-1 Feb 13 awarded Critic Feb 13 revised What is the distribution of empirical covariance between two independent normal distributions? added 509 characters in body Feb 13 asked What is the distribution of empirical covariance between two independent normal distributions? Feb 7 awarded Yearling Jan 28 comment $u$~$N(0,A)$ and z$|u$~$N(u,1)$ how to show that $u|z$~$N(Bz,B)$ where $B=A/(A+1)$? what is $f(U,Z)$ ? $f(U,Z)=?$ Jan 28 comment $u$~$N(0,A)$ and z$|u$~$N(u,1)$ how to show that $u|z$~$N(Bz,B)$ where $B=A/(A+1)$? but what is $p(z)$ ? $N(0,1)$ ? Jan 28 revised $u$~$N(0,A)$ and z$|u$~$N(u,1)$ how to show that $u|z$~$N(Bz,B)$ where $B=A/(A+1)$? deleted 61 characters in body Jan 28 revised $u$~$N(0,A)$ and z$|u$~$N(u,1)$ how to show that $u|z$~$N(Bz,B)$ where $B=A/(A+1)$? added 7 characters in body; edited title Jan 28 revised $u$~$N(0,A)$ and z$|u$~$N(u,1)$ how to show that $u|z$~$N(Bz,B)$ where $B=A/(A+1)$? edited tags