Jacobi algorithm problem... could wikipedia be wrong?
I am working on a c implementation of the jacobi algorithm, using wikipedia as an example.
I was trying to follow along with the given example on the page;
Jacobi method - Wikipedia, the free encyclopedia
The starting matrix A = [2 3,5 7]
then the lower is said to be [0 0,-5 0] which makes sence except that the 5 is negative.
the same is for the upper.
the page on strictly lower and upper parts of a matrix says nothing about negating them. am i misunderstanding something?