Perhaps the title says it all, but I should expand it more, I guess. So I am trying to explore more about constrained optimization. I noticed that there are very little to no formal (with examples) discussions on algorithms on nonlinear constrained optimization in the internet. They would either run Excel Solver or some other numerical program to solve them. Can someone point me to some resources, preferably with worked examples? I would appreciate any form of help about this. Thanks a lot guys!