restricted correspondence
51distance learning — n. any system of individualized, esp. postsecondary instruction for students at a distance from a campus, utilizing the Internet, videoconferencing, preprogrammed courses, etc. * * * ▪ education Introduction also called distance education , e… …
52Glossary of chess — See also: Outline of chess and Glossary of chess problems This page explains commonly used terms in chess in alphabetical order. Some of these have their own pages, like fork and pin. For a list of unorthodox chess pieces, see fairy chess… …
53British Mandate for Palestine — Mandate for Palestine الانتداب البريطاني على فلسطين המנדט הבריטי על פלשתינה א י Mandate of the United Kingdom …
54List of chess terms — This page explains commonly used terms in chess in alphabetical order. Some of these have their own pages, like fork and pin. For a list of unorthodox chess pieces, see fairy chess piece; for a list of terms specific to chess problems, see chess… …
55Down House — The Home of Charles Darwin, Down House Type House, garden and grounds Proprietor English Heritage Size 13.2 hectares (33 acres) …
56Letters, Lovecraft’s — Shortly after his death, HPL’s longtime friend Maurice W. Moe wrote: “If there is ever a survey to determine the greatest letter writer in history, the claims of Lovecraft deserve close investigation” (“Howard Phillips Lovecraft: The Sage of… …
57Number theory — A Lehmer sieve an analog computer once used for finding primes and solving simple diophantine equations. Number theory is a branch of pure mathematics devoted primarily to the study of the integers. Number theorists study prime numbers (the… …
58Clifford algebra — In mathematics, Clifford algebras are a type of associative algebra. They can be thought of as one of the possible generalizations of the complex numbers and quaternions.[1][2] The theory of Clifford algebras is intimately connected with the… …
59Gottlob Frege — Infobox Philosopher region = Western Philosophy era = 19th century philosophy, color = #B0C4DE image caption = Friedrich Ludwig Gottlob Frege name = Friedrich Ludwig Gottlob Frege birth = November 8, 1848 death = 26 July, 1925 school tradition =… …
60Rules of chess — The rules of chess (also known as the laws of chess) are rules governing the play of the game of chess. While the exact origins of chess are unclear, modern rules first took form during the Middle Ages. The rules c …
