splitting extension
61Forcing (mathematics) — For the use of forcing in recursion theory, see Forcing (recursion theory). In the mathematical discipline of set theory, forcing is a technique invented by Paul Cohen for proving consistency and independence results. It was first used, in 1963,… …
62U.S. Route 50 — The Interstate Highway System with US 50 in red Route information …
63Exfoliation joint — Exfoliation joints wrapping around Half Dome in Yosemite National Park, California …
64Non-abelian class field theory — In mathematics, non abelian class field theory is a catchphrase, meaning the extension of the results of class field theory, the relatively complete and classical set of results on abelian extensions of any number field K, to the general Galois… …
65Oklahoma State Highway 58 — State Highway 58 Route information …
66Utah State Route 73 — Infobox road state=UT type=SR route=73 section=113 maint=UDOT length mi=41.177 length round=3 length ref=Utah Department of Transportation, [http://www.udot.utah.gov/main/f?p=100:pg:2814615533739116:::1:T,V:814, Highway Reference Information] :… …
67Germany — /jerr meuh nee/, n. a republic in central Europe: after World War II divided into four zones, British, French, U.S., and Soviet, and in 1949 into East Germany and West Germany; East and West Germany were reunited in 1990. 84,068,216; 137,852 sq.… …
68World War II — the war between the Axis and the Allies, beginning on September 1, 1939, with the German invasion of Poland and ending with the surrender of Germany on May 8, 1945, and of Japan on August 14, 1945. Abbr.: WWII * * * or Second World War (1939–45)… …
69photography, technology of — Introduction equipment, techniques, and processes used in the production of photographs. The most widely used photographic process is the black and white negative–positive system (Figure 1 >). In the camera the lens projects an image of… …
70Field (mathematics) — This article is about fields in algebra. For fields in geometry, see Vector field. For other uses, see Field (disambiguation). In abstract algebra, a field is a commutative ring whose nonzero elements form a group under multiplication. As such it …
