Main Classes of Groups
The range of groups being considered has gradually expanded from finite permutation groups and special examples of matrix groups to abstract groups that may be specified through a presentation by generators and relations.
Read more about this topic: Group Theory
Famous quotes containing the words main, classes and/or groups:
“Greece is a sort of American vassal; the Netherlands is the country of American bases that grow like tulip bulbs; Cuba is the main sugar plantation of the American monopolies; Turkey is prepared to kow-tow before any United States pro-consul and Canada is the boring second fiddle in the American symphony.”
—Andrei Andreyevich Gromyko (1909–1989)
“There were three classes of inhabitants who either frequent or inhabit the country which we had now entered: first, the loggers, who, for a part of the year, the winter and spring, are far the most numerous, but in the summer, except for a few explorers for timber, completely desert it; second, the few settlers I have named, the only permanent inhabitants, who live on the verge of it, and help raise supplies for the former; third, the hunters, mostly Indians, who range over it in their season.”
—Henry David Thoreau (1817–1862)
“Some of the greatest and most lasting effects of genuine oratory have gone forth from secluded lecture desks into the hearts of quiet groups of students.”
—Woodrow Wilson (1856–1924)