- The discrete form of Fredholm equation of the second kind is a matrix form (a linear system).
- To get the limit of the discrete form, the dimension of matrix n goes to infinity.
- The solution of linear system is obtained by a variant of Cramer's rule. This needs the determinant.
- The absolute value of the determinant relates with the system's convergence. Therefore, the max determinant problem was interesting.
Fredholm equation of the second kind is as following.