False position method Moroccan origin. Leonardo of Pisa (Fibonacci) devoted Chapter 13 of his book "Liber Abaci" (AD 1202) to explaining and demonstrating the uses of double false position, terming the method "regulis elchatayn" after the "al-khaṭāʾayn" method that he had learned from Arab sources. In 1494, Pacioli used the term "el cataym" in his book "Summa de arithmetica", probably taking the term from Fibonacci. Other European writers would follow Pacioli and sometimes provided a translation into Latin or the vernacular. For instance, Tartaglia translates the latinized version of Pacioli's term into the vernacular "false positions" in 1556. Pacioli's term nearly disappeared in
John Bain (soccer) League. He is currently married to Shannon Bain. They have three boys; Cameron, McEwan, and Stirling. John Bain (soccer) John Bain (born 3 June 1957 in Falkirk, Scotland) is a retired Scottish-US soccer midfielder who currently coaches youth soccer in the United States. Bain began his professional career in England before moving to the United States in 1978. Over his twenty-year playing career, Bain played for numerous leagues and teams, both indoors and out. After retiring from playing professionally, he has coached at the professional, youth club and high school levels in the US. Although born in Scotland, Bain's father