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.
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Famous quotes containing the words simply and/or laced:
“Science is unflinchingly deterministic, and it has begun to force its determinism into morals. On some shining tomorrow a psychoanalyst may be put into the box to prove that perjury is simply a compulsion neurosis, like beating time with the foot at a concert or counting the lampposts along the highway.”
—H.L. (Henry Lewis)
“Time now to pack this humpty-dumpty
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my stomach laced up like a football
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—Anne Sexton (1928–1974)