Kenneth Appel dies - New York News

Used computer on map question

Kenneth Appel dies

Posted: Updated:

DOVER, N.H. (AP) — Kenneth Appel, a mathematician who was the first to use a computer to prove a century-old major mathematical theorem, has died at age 80 in Dover, N.H.

The Tasker Funeral Home confirms that Appel, who was diagnosed with esophageal cancer, died April 19 in hospice care.

Appel was a longtime educator who chaired the University of New Hampshire mathematics department, retiring in 2003.

Before that, he was a faculty member at the University of Illinois at Urbana. In 1976, he and Wolfgang Haken used 1,200 hours of calculations from an IBM computer to prove that a flat map can be colored with just four colors so that contiguous countries have different colors.

Proving the 100-year-old "Four-Color Conjecture" was considered a major intellectual accomplishment.

 

Copyright 2013 The Associated Press.

  • Local NewsLocal NewsMore>>

  • Hundreds celebrate Easter at St. Patricks Cathedral

    Hundreds celebrate Easter at St. Patricks Cathedral

    Saturday, April 19 2014 10:37 PM EDT2014-04-20 02:37:51 GMT
    Hundreds of people showed up to Saturday's mass at St. Patricks Cathedral to celebrate Easter, one of the holiest days for Christians around the world.
    Hundreds of people showed up to Saturday's Mass at St. Patricks Cathedral to celebrate Easter, one of the holiest days for Christians around the world.
  • NYC police investigating body in plastic container

    NYC police investigating body in plastic container

    Police in New York City are questioning a suspect after discovering a dead body stuffed into a large, black plastic storage container.
    Police in New York City are questioning a suspect after discovering a dead body stuffed into a large, black plastic storage container.
  • Governor kicks off 114th annual New York International Auto Show

    Governor kicks off 114th annual New York International Auto Show

    Saturday, April 19 2014 7:00 PM EDT2014-04-19 23:00:18 GMT
    Auto fans you may already know this the 114th New York International Automobile Show is in town this week. Governor Cuomo was on hand Saturday to kick off the official opening of the 10 day event by driving a 2015 Chevrolet Corvette convertible through the Jacob Javits Convention Center.
    Auto fans you may already know this the 114th New York International Automobile Show is in town this week. Governor Cuomo was on hand Saturday to kick off the official opening of the 10 day event by driving a 2015 Chevrolet Corvette convertible through the Jacob Javits Convention Center.
Powered by WorldNow
Didn't find what you were looking for?
All content © Copyright 2000 - 2014 Fox Television Stations, Inc. and Worldnow. All Rights Reserved.
Privacy Policy | Terms of Service | Ad Choices