I have a matrix, if I apply inverse function from existing softwares, I get an inverse matrix for every non singular matrix.
I would like to know if there is a measure that tells that how close the approximation to check weather to consider the inverse matrix not.
In my application, there is a possibility to discard an inverse matrix that's not well approximated.
I am looking for few hints, keywords to look for or an advice in calculating the measure.
I really appreciate any kind of help.