Eigen value and vector

A blog for eigenvalue and eigenvector:

https://www.math.psu.edu/srikrish/math251/notes/eigenvalues.pdf

https://www.math.psu.edu/srikrish/math251/notes/realeigs.pdf

https://www.math.psu.edu/srikrish/math251/notes/complexeigs.pdf

A blog for explanation :

http://www.math.harvard.edu/~chaoli/doc/Apprentice2.html