# Constructing of 16x16 Involutory Binary Matrices of Branch Number 7

In the PDF “Algebraic Construction of 16×16 Binary Matrices of Branch Number 7 with One Fixed Point”, it was given that:

Matrix 1h = 1 0 0 0
0 1 0 0
0 0 1 0
0 0 0 1

Matrix 2h = 0 0 0 1
1 0 0 1
0 1 0 0
0 0 1 0

Matrix 4h = 0 0 1 0
0 0 1 1
1 0 0 1
0 1 0 0

Matrix Fh = 1 1 1 1
1 0 0 0
1 1 0 0
1 1 1 0


What are the values of 3h, 5h, 7h, Ah, Eh?

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I have a question: I skimmed the article but didn't find the matrices you quote. That's because I only looked at the figures and didn't read the article itself. Could you please add the page numbers the matrices can be found at? – rath May 18 '14 at 5:33