The golden number Φ The Plastic number
Ptolemy's theorem Napoleon's theorem
Straight lines Conics
The real transcendental functions Geometric vectors
Complex numbers Spherical trigonometry
Spherical zones and spherical caps
Mathematica with WolframAlpha Vector spaces and linear operators
Integrals Partitions
Prime numbers Probability
Euclid's Algorithm Collatz's conjecture
Continued fractions Egyptian fractions
Pythagorean triples The Mandelbrot set
Sets and predicates Mathematical induction

last reviewed: October 2019