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 Yearling
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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
Jan
28
asked $u$~$N(0,A)$ and z$|u$~$N(u,1)$ how to show that $u|z$~$N(Bz,B)$ where $B=A/(A+1)$?
Jan
27
asked How to obtain estimate of covariance matrix that will be guarantee to be semi-positive define?
Jan
23
comment Find $C$, if $A=CBC$, where $A$,$B$,$C$ are symmetric matrices.
and could You tell me what would be the most intuitive assumption needed for obtaining unique solution if assumption "B is positive definite matrix" deosn't hold anymore ?