http://www.csun.edu/~ctoth/Handbook/HDCG3.html
H-Representation of a convex hull.
about inequality_generator() function:
https://doc.sagemath.org/html/en/reference/discrete_geometry/sage/geometry/polyhedron/base.html#sage.geometry.polyhedron.base.Polyhedron_base.inequality_generator
https://www.duolingo.com/learn
https://ocw.mit.edu/