Returns the Frank-min matrix
A = makematrix_frankmin ( n )
a 1-by-1 matrix of doubles, integer value, the size of the matrix to return
a n-by-n matrix of doubles, the Frank-min matrix
Returns the Frank-min matrix of size n.
For i=1,2,...,n, we have :
A(i,j) = min(i,j)
"A reasonably well behaved matrix." see Nash below.
J.C. Nash, Compact Numerical Methods for Computers: Linear, Algebra and Function Minimisation, second edition, Adam Hilger, Bristol, 1990 (Appendix 1).