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Korngold, Erich Wolfgang

(Encyclopedia)Korngold, Erich Wolfgang, 1897–1957, American composer of film and concert music and opera, b. Brünn, Austria-Hungary (now Brno, Czech Republic). He began composing ballet music and operas in his t...

Deane, Silas

(Encyclopedia)Deane, Silas, 1737–89, political leader and diplomat in the American Revolution, b. Groton, Conn. A lawyer and merchant at Wethersfield, Conn., he was elected (1772) to the state assembly and became...

Eisenach

(Encyclopedia)Eisenach īˈzənäkh [key], city, Thuringia, central Germany. It is an industrial center and ...

Sickingen, Franz von

(Encyclopedia)Sickingen, Franz von fränts fən zĭˈkĭngən [key], 1481–1523, German knight. Placed under the ban of the Holy Roman Empire because of his profitable forays along the Rhine, he served King Franci...

Courland

(Encyclopedia)Courland or Kurland both: kûrˈlănd, Ger. ko͞orˈlänt [key], Latvian Kurzeme, historic region and former duchy, in Latvia, between the Baltic Sea and the Western Dvina River. It is an agricultural...

operetta

(Encyclopedia)operetta ŏpərĕtˈə [key], type of light opera with a frivolous, sentimental story, often employing parody and satire and containing both spoken dialogue and much light, pleasant music. In the earl...

Bolyai

(Encyclopedia)Bolyai bōˈlyoi [key], family of Hungarian mathematicians. The father, Farkas, or Wolfgang, Bolyai, 1775–1856, b. Bolya, Transylvania, was educated in Nagyszeben from 1781 to 1796 and studied in Ge...

Sutter, John Augustus

(Encyclopedia)Sutter, John Augustus, 1803–80, American pioneer, b. Kandern, Baden, of Swiss parents. His original name was Johann August Suter. He emigrated to the United States in 1834, went to St. Louis, then t...

Sills, Beverly

(Encyclopedia)Sills, Beverly, 1929–2007, American coloratura soprano, b. Brooklyn, N.Y., as Belle Silverman. Her childhood career as a radio singer (when she was first nicknamed “Bubbles”) led to voice studie...

calculus of variations

(Encyclopedia)calculus of variations, branch of mathematics concerned with finding maximum or minimum conditions for a relationship between two or more variables that depends not only on the variables themselves, a...