Column

  1. Math

    Groups, Graphs, and Erdös Numbers

    Erdös numbers reveal the great extent of mathematical collaboration.

    By Ivars Peterson
  2. Math

    Priming Upward

    A singular effort has turned up what is now the largest known prime number.

    By Ivars Peterson
  3. Math

    Playing Pig, Optimally

    The simple dice game Pig is surprisingly complex when you're trying to find an optimal strategy for playing it.

    By Ivars Peterson
  4. Math

    A Measure of Beauty

    In the 1930s, mathematician G.D. Birkhoff proposed a formula for computing aesthetic value.

    By Ivars Peterson
  5. Math

    Extra Time, Math, and the SAT

    Extra time on the math portion of the SAT helps the most able students the most.