Back-and-forth method — In mathematical logic, especially set theory and model theory, the back and forth method is a method for showing isomorphism between countably infinite structures satisfying specified conditions. In particular:* It can be used to prove that any… … Wikipedia
Back and Forth (disambiguation) — Back and Forth may refer to:*Back and forth, a method of showing isomorphism between countably infinite structures satisfying specified conditions. * Back and Forth , the self published debut album of Skinny Puppy, released in 1984 * Back and… … Wikipedia
Forth (programming language) — infobox programming language name = Forth paradigm = Procedural, stack oriented year = 1970s designer = Charles H. Moore typing = typeless dialects = colorForth, Open Firmware implementations = Forth, Inc., GNU Forth, MPE influenced by =… … Wikipedia
Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity. Computer scientist Manindra Agrawal of the… … Universalium
Business and Industry Review — ▪ 1999 Introduction Overview Annual Average Rates of Growth of Manufacturing Output, 1980 97, Table Pattern of Output, 1994 97, Table Index Numbers of Production, Employment, and Productivity in Manufacturing Industries, Table (For Annual… … Universalium
Scientific method — … Wikipedia
tunnels and underground excavations — ▪ engineering Introduction Great tunnels of the world Great tunnels of the worldhorizontal underground passageway produced by excavation or occasionally by nature s action in dissolving a soluble rock, such as limestone. A vertical opening … Universalium
Linguistics and the Book of Mormon — Part of a series on The Book of Mormon … Wikipedia
separation and purification — ▪ chemistry Introduction in chemistry, separation of a substance into its components and the removal of impurities. There are a large number of important applications in fields such as medicine and manufacturing. General principles… … Universalium
Architecture and Civil Engineering — ▪ 2009 Introduction Architecture For Notable Civil Engineering Projects in work or completed in 2008, see Table (Notable Civil Engineering Projects (in work or completed, 2008)). Beijing was the centre of the world of architecture… … Universalium
Bates method — Alternative medicine / fringe therapies William Bates and his assistant. Claims The need for eyeglasses can be reversed by relaxation. Related fields Ophthalmo … Wikipedia