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Pluto, in Greek religion and mythology

(Encyclopedia)Pluto, in Greek religion and mythology, god of the underworld, son of Kronos and Rhea; also called Hades. After the fall of the Titans, Pluto and his brothers Zeus and Poseidon divided the universe, a...

Pontus, in Greek religion and mythology

(Encyclopedia)Pontus pŏnˈtəs [key], in Greek religion and mythology, sea god. He was the son of Gaea and by her the father of Ceto, Nereus, Thaumus, Phorcus, and Eurybia. ...

Uranus , in Greek religion and mythology

(Encyclopedia)Uranus, in Greek religion and mythology, the heaven, first ruler of the universe, son of Gaea (the earth). He was the father of Gaea's children, the Titans, the Cyclopes, and the Hundred-handed Ones (...

Titan , in Greek religion and mythology

(Encyclopedia)Titan, in Greek religion and mythology, one of 12 primeval deities. The female Titan is also called Titaness. The Titans—six sons and six daughters—were the children of Uranus and Gaea. They were ...

Tethys , in Greek religion and mythology

(Encyclopedia)Tethys, in Greek religion and mythology, a Titan, daughter of Gaea and Uranus. She was the wife of the seagod Oceanus and the mother of the Oceanids. ...

Rhea, in Greek religion and mythology

(Encyclopedia)Rhea, in Greek religion and mythology, a Titan. She was the wife and sister of Kronos, by whom she bore Zeus, Poseidon, Pluto, Hestia, Hera, and Demeter. She eventually helped Zeus overthrow Kronos. H...

Abu'l Hasan al-Uqlidisi

(Encyclopedia)Abu'l Hasan al-Uqlidisi, c. a.d. 920–c. a.d. 980, Arab mathematician working in Damascus and Baghdad. He wrote (952–53) a treatise on arithmetic and Arabic numerals that is the first known work to...

Wiener, Norbert

(Encyclopedia)Wiener, Norbert, 1894–1964, American mathematician, educator, and founder of the field of cybernetics, b. Columbia, Mo., grad. Tufts College, 1909, Ph.D. Harvard, 1913. In 1920 he joined the faculty...

Beltrami, Eugenio

(Encyclopedia)Beltrami, Eugenio āo͞ojĕˈnyō bālträˈmē [key], 1835–99, Italian mathematician. He is famous for his work on non-euclidean geometry, electricity, and magnetism. ...

Mason-Dixon Line

(Encyclopedia)Mason-Dixon Line, boundary between Pennsylvania and Maryland (running between lat. 39°43′26.3″N and lat. 39°43′17.6″N), surveyed by the English team of Charles Mason, a mathematician and ast...