# Helpful Links

1. Positive semi definite matrices https://www.math.purdue.edu/~eremenko/dvi/lect4.9.pdf

2. Conic Programming http://www.damtp.cam.ac.uk/user/hf323/M18-OPT/lecture3.pdf

3. Stanford book on convex optimization https://web.stanford.edu/~boyd/cvxbook/bv_cvxbook.pdf

4. A gentle introduction to optimal power flow https://invenia.github.io/blog/2020/12/04/pf-intro/