Ignore this box please.
More
Settings
Goodies
About
Help
Feedback
PRIVACY
DontTrack
DontBubble
Policy
COMMUNITY
Platform
Forum
Chat
Spread
Search syntax
s:d sort by date
r:uk uk region
site: domain search
\ search first result
More...
r:n turn off region
!a search search amazon
site:uk uk pages
f: find files
t: within title
b: within body
More explanation...
Kenneth Appel
Kenneth Ira Appel is a mathematician who in 1976, with colleague Wolfgang Haken at the University of Illinois at Urbana-Champaign, solved one of the most famous problems in mathematics, the four-color theorem.
More at Wikipedia
Graph theorists
University of Illinois at Urbana–Champaign faculty
This page requires Javascript.Get the non-JS version
here
.