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Shaker Heights

(Encyclopedia)Shaker Heights, city (1990 pop. 30,831), Cuyahoga co., NE Ohio, a residential suburb of Cleveland; inc. 1912. Founded (1905) as a suburban development by Cleveland businessmen Oris and Mantis Van Swer...

Anthemius of Tralles

(Encyclopedia)Anthemius of Tralles ănthēˈmēəs, trălˈēz [key], fl. 6th cent., Greek architect, engineer, and mathematician. By order of Emperor Justinian and with the aid of Isidorus of Miletus, he built (53...

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 ...

Hermes, in Greek religion and mythology

(Encyclopedia)Hermes, in Greek religion and mythology, son of Zeus and Maia. His functions were many, but he was primarily the messenger of the gods, particularly of Zeus, and conductor of souls to Hades. He was go...

Regiomontanus

(Encyclopedia)Regiomontanus rēˌjēōmŏnˌtāˈnəs [key] [Lat.,=belonging to the royal mountain, i.e., to Königsberg], 1436–76, German astronomer and mathematician, b. Königsberg. His original name was Johan...

Heron of Alexandria

(Encyclopedia)Heron of Alexandria hērˈŏn [key] or Hero, mathematician and inventor. The dates of his birth and death are unknown; conjecture places them between the 2d cent. b.c. and the 3d cent. a.d. He is beli...

Grassmann, Hermann Günther

(Encyclopedia)Grassmann, Hermann Günther hĕrˈmän günˈtər gräsˈmän [key], 1809–77, German mathematician and Sanskrit scholar, educated in Berlin. He invented a new algebra of vectors (somewhat similar to...

Alexandria, city, Egypt

(Encyclopedia)Alexandria, Arabic Al Iskandariyah, city, N Egypt, on the Mediterranean Sea. It is at the western extremity of the Nile River delta, situated on a narrow isthmus between the sea and Lake ...

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...

Longinus, fl. 1st cent.? a.d., Greek literary critic

(Encyclopedia)Longinus lŏnjīˈnəs [key], fl. 1st cent.? a.d., Greek literary critic; writer of the famous treatise On the Sublime. Nothing is known of his life, and for a long time his work was attributed to Cas...