### Topics

Linear Optimization

The linear optimization is explained on a practical industrial case. The Simplex Algorithm is presented. The Excel Solver is described.

Earth Coordinates

I describe the Earth-centered (ECEF) cartesian and spherical coordinates as well as local ENU coordinates. I also derive transformations between them.

Great Circle on the Earth

I derive the equation of the great circle on the spherical Earth, the formula for the shortest distance and other related formulas.