Fibonacci numbers and nature

  The Pi Search page

  Math resources by subject

  Intro to graphs and graph theory

  Channel assignment and graph coloring

  An approach to the trinomial theorem

  Another approach to trinomial coefficients

  Towers of Hanoi demo

  A history of the perfect number problem

  A history of the perfect number problem with a list of those known

  A history of the Four Color Problem

  Biography of Paul Erdös

  Biography of Georg Cantor

  Hofstadter's Explanation of Gödel's Theorem

  A brief biography of Kurt Gödel

  Paper polyhedra models

  Axiom of Choice homepage

  The Continuum Hypothesis

  Euclid's Elements - David Joyce's applet version

  The Happy End Problem

  The Sierpinski Gasket

  Leibniz and Pascal Triangles

  Derangements

  Inclusion-Exclusion Principle