Brief notes

Here are some of my notes on some miscellaneous topics that came up during my research. Feel free to use them---attribution is appreciated but not required.

[1] Computing β_N.

[2] Index-mapping for Spherical Harmonics Expansion.

[3] If you find Eq.(7) and Eq.(9) in [2] a bit mysterious, then the first three problems and solutions in this brief note may help you understand how these equations come about. These problems were assigned as homework problems in a freshman CS course I taught at CUA.