A Dynkin diagram with no multiple edges is called simply laced, as are the corresponding Lie algebra and Lie group. These are the diagrams, and phenomena that such diagrams classify are referred to as an ADE classification. In this case the Dynkin diagrams exactly coincide with Coxeter diagrams, as there are no multiple edges.
Read more about this topic: Dynkin Diagram
Famous quotes containing the words simply and/or laced:
“We simply must have faith in each other, faith in our ability to govern ourselves, and faith in the future of this Nation. Restoring that faith and that confidence to America is now the most important task we face.”
—Jimmy Carter (James Earl Carter, Jr.)
“Time now to pack this humpty-dumpty
back the frightened way she came
and run alongnne, and run along now,
my stomach laced up like a football
for the game.”
—Anne Sexton (1928–1974)