## 220 Reputation

9 years, 255 days
Beijing, China

## r and s?...

@mmcdara thanks for your answer. I think you skip the variaion of r and s.

## for k=any value?...

@Kitonum thanks your response. What is the general procudre to write block matrix for any k like 3,4,5 etc. The following one is for k=2

`<A[1], Matrix(3); Matrix(3), A[2]>;`

I tried to get the desired blockmatrix via proc as:

L := proc (M)

Matrix(2^(k-1), 2^(k-1), {seq(seq((i, j+i+1) = OO, i = 2 .. 2^(k-1)-1-j), j = 0 .. 2^(k-1)-3), seq(seq((j+i, i-1) = OO, i = 3 .. 2^(k-1)-j), j = 0 .. 2^(k-1)-3), seq((1, i) = OO, i = 3 .. 2^(k-1)), seq((i, 1) = OO, i = 3 .. 2^(k-1)), seq((i, i) = A[i], i = 2 .. 2^(k-1)), (1, 1) = A[1], (1, 2) = OO, (2, 1) = OO})

end proc

where OO is null matrix of same order as A[i]'s.

## Need more favor...

@Kitonum thanks for your response. I want the block matrix of the following form

Here null matrix is of 3 by 3 order

## Entries of A[i]...

@Carl Love extremly sorry for missing information. A[i] is M-1 by M-1 matrix having element like the following

## Thanks...

@Rouben Rostamian  thanks alot. I got it