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Von Neumann, John

(Encyclopedia)Von Neumann, John noiˈmän [key], 1903–57, American mathematician, b. Hungary, Ph.D. Univ. of Budapest, 1926. He came to the United States in 1930 and was naturalized in 1937. He taught (1930–33)...

Alexius IV

(Encyclopedia)Alexius IV (Alexius Angelus), d. 1204, Byzantine emperor (1203–4), son of Isaac II. When his father was deposed, Alexius fled to Italy and then went to Germany. Encouraged by his brother-in-law, Phi...

Magruder, John Bankhead

(Encyclopedia)Magruder, John Bankhead məgro͞oˈdər [key], 1810–71, Confederate general in the American Civil War, b. Winchester, Va. His reckless daring in the Mexican War won him quick promotion in the army. ...

Khosrow II

(Encyclopedia)Khosrow II (Khosrow Parviz) pärvēzˈ [key], d. 628, king of Persia of the Sassanid, or Sassanian, dynasty; grandson of Khosrow I. He is also called Chosroes II or Khosru II. He succeeded his father ...

Harsha, Indian emperor

(Encyclopedia)Harsha hûrˈshə [key], b. c.590, Indian emperor (606–47). He became (606) king of a small state in the upper Ganges Valley, and by 612 he had built up a vast army with which he forged nearly all I...

Hadrian, Roman emperor

(Encyclopedia)Hadrian hāˈdrēən [key], a.d. 76–138, Roman emperor (117–138), b. Spain. His name in full was Publius Aelius Hadrianus. An orphan, he became the ward of Trajan. Hadrian distinguished himself as...

Licinius, Roman emperor

(Encyclopedia)Licinius, 250–325, Roman emperor. He became coemperor with Galerius, being given the rule of Illyricum (308); after the death of Galerius he added Greece and Thrace to his territories. He allied him...

Philip, Roman emperor

(Encyclopedia)Philip or Philip the Arabian (Marcus Julius Philippus), 204?–249, Roman emperor (244–49). He served under Gordian III against the Persians, instigated the assassination of the emperor, and conclud...

Tacitus, Roman emperor

(Encyclopedia)Tacitus (Marcus Claudius Tacitus) tăsˈĭtəs [key], d. 276, Roman emperor (275–76). An elderly senator with a reputation for honesty and vigor, he was chosen by the senate to succeed the murdered ...

Valerian, Roman emperor

(Encyclopedia)Valerian (Publius Licinius Valerianus) vəlērˈēən [key], d. after 260, Roman emperor (253–60). He held important posts, both civil and military, under the emperors Decius and Gallus. After the s...