I have a large sparse matrix A and have gotten its inverse matrix inv(A) . Then I need to change an element value to get a new matrix, A1. I am trying to get the inverse of A1. Is there any way to do it , rather than recalculate the inv(A1)? Could I get some benefits from A or inv(A)? Is there some method for updating?
This may be a basic math problem. But it confused me a lot. Any suggestion would be appreciated.