A comprehensive digital encyclopedia presenting factual, historical, and educational articles supported by reliable sources and structured data. Page: 290

West Africa, also known as Western Africa, is the westernmost region of Africa. The United Nations defines Western Africa as the 16 countries of Benin, Burkina Faso, Cape Verde, The Gambia, Ghana, Guinea, Guinea-Bissau, Ivory Coast, Liberia, Mali, Mauritania, Niger, Nigeria, Senegal, Sierra Leone, a…

A numerical digit (often shortened to just digit) or numeral is a single symbol used alone (such as "1"), or in combinations (such as "15"), to represent numbers in positional notation, such as the common base 10. The name "digit" originates from the Latin digiti meaning fingers.…

A play clock, also called a delay-of-game timer, is a countdown clock intended to speed up the pace of the game in gridiron football (American or Canadian). The offensive team must put the ball in play by either snapping the ball during a scrimmage down or kicking the ball during a free kick down be…

Art history is an academic discipline devoted to the study of artistic production and visual culture throughout human history. Art historians use a historical method or a philosophy, such as historical materialism or critical theory, to analyze artworks. Among other topics, they study art's impact o…

In linear algebra, the characteristic polynomial of a square matrix is a polynomial which is invariant under matrix similarity and has the eigenvalues as roots. It has the determinant and the trace of the matrix among its coefficients. The characteristic polynomial of an endomorphism of a finite-dim…

Arthur Cayley FRS (/ˈkeɪli/; 16 August 1821 – 26 January 1895) was an English mathematician who worked mostly on algebra. He helped found the modern British school of pure mathematics, and was a professor at Trinity College, Cambridge for 35 years.…

Newry (/ˈnjʊəri/; from Irish An Iúraigh) is a city in Northern Ireland, standing on the Clanrye River in counties Down and Armagh. It is near the border with the Republic of Ireland, on the main route between Belfast (34 miles/55 km away) and Dublin (67 miles/108 km away). The population was 27,913 …

Jeremiah Dixon (27 July 1733 – 22 January 1779) was an English surveyor and astronomer best known for surveying the Mason–Dixon line with Charles Mason from 1763 to 1767. The line came to mark the borders between Maryland, Pennsylvania and Delaware. Dixon's name may be the origin for the nickname Di…

Robert Montgomery Knight (October 25, 1940 – November 1, 2023) was an American men's college basketball coach. Nicknamed "the General", he won 902 NCAA Division I men's basketball games, a record at the time of his retirement and sixth all-time record at the time of his death.…

The windshield (American English and Canadian English) or windscreen (Commonwealth English) of an aircraft, car, bus, motorbike, truck, train, boat or streetcar is the front window, which provides visibility while protecting occupants from the elements. Modern windshields are generally made of lamin…