Column

  1. Math

    Proof by Computer

    Using computers to help prove theorems raises question about checking proofs.

    By Ivars Peterson
  2. Math

    Euler’s Sums of Powers

    Investigating sums of powers has a long history, going back to Fermat and Euler.

    By Ivars Peterson
  3. Math

    Sunlight Speckle

    Lasers are not the only light sources that can produce a speckle pattern on a rough surface.

    By Ivars Peterson
  4. Math

    Flight of the Bumblebee

    The notion that scientists proved bumblebees can't fly has a long legacy.

    By Ivars Peterson
  5. Math

    College Football, Rankings, and Wandering Monkeys

    The system for ranking college football teams to see who plays for the national championship has flaws.