You can have a look at the following books in this context:

1) Nonlinear Programming by Bazaara, Sherali and Shetty

2) Convex Optimization by Boyd and Vandenberghe

3) Numerical Optimization by Nocedal and Wright

4) Matrix Analysis and Applications by Xian da Zhang

Thank you, Debopam. I will look into them.

as well:

Nonlinear Programming 1st, 2nd, 3rd Edition, by Dimitri P. Bertsekas

Thank you, Steftcho, for the suggestion.