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infinity

(Encyclopedia)infinity, in mathematics, that which is not finite; it is often indicated by the symbol ∞. A sequence of numbers, a1, a2, a3, … , is said to “approach infinity” if the numbers eventually b...

Mühlenberg, Heinrich Melchior

(Encyclopedia)Mühlenberg, Heinrich Melchior myo͞oˈlənbûrg [key], 1746–1807, American clergyman, Revolutionary officer, and legislator, eldest son of Heinrich, was born in Trappe, Pa., and studied at Halle. A...

miniature painting

(Encyclopedia)miniature painting [Ital.,=artwork, especially manuscript initial letters, done with the red lead pigment minium; the word originally had no implication as to size]. In a general sense the term denote...

North American Free Trade Agreement

(Encyclopedia)North American Free Trade Agreement (NAFTA), accord establishing a free-trade zone in North America; it was signed in 1992 by Canada, Mexico, and the United States and took effect on Jan. 1, 1994. NAF...

Liberal Republican party

(Encyclopedia)Liberal Republican party, in U.S. history, organization formed in 1872 by Republicans discontented at the political corruption and the policies of President Grant's first administration. Other disaffe...

Shackleton, Sir Ernest Henry

(Encyclopedia)Shackleton, Sir Ernest Henry, 1874–1922, British antarctic explorer, b. Ireland. The first of his voyages to Antarctica was made as a member of the expedition (1901–4) of Robert F. Scott. Shacklet...

Progressive party

(Encyclopedia)Progressive party, in U.S. history, the name of three political organizations, active, respectively, in the presidential elections of 1912, 1924, and 1948. At Philadelphia in July, 1948, a new...

Crane, Hart

(Encyclopedia)Crane, Hart (Harold Hart Crane), 1899–1932, American poet, b. Garrettsville, Ohio. He published only two volumes of poetry during his lifetime, but those works established Crane as one of the most o...

Gielgud, Sir John

(Encyclopedia)Gielgud, Sir John (Arthur John Gielgud) gĭlˈgo͝od [key], 1904–2000, English actor, director, and producer. A grandnephew of Ellen Terry, Gielgud made his debut at the Old Vic in 1921. His intelli...