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Ready reckoner. A ready reckoner is a printed book or table containing pre-calculated values, often multiples of given amounts. They were widely used in shops and by tradesmen before the advent of cheap electronic calculators, metric weights and measures and decimal currencies in the 1970s.
Beyer Speed Figure. The Beyer Speed Figure is a system for rating the performance of Thoroughbred racehorses in North America designed in the early 1970s by Andrew Beyer, the syndicated horse racing columnist for The Washington Post. First published in book form in 1975, the Daily Racing Form began incorporating Beyer Speed Figures in a horse's ...
The stepped reckoner or Leibniz calculator was a mechanical calculator invented by the German mathematician Gottfried Wilhelm Leibniz (started in 1673, when he presented a wooden model to the Royal Society of London [2] and completed in 1694). [1] The name comes from the translation of the German term for its operating mechanism, Staffelwalze ...
Dosage Index. The Dosage Index is a mathematical figure used by breeders of Thoroughbred race horses, and sometimes by bettors handicapping horse races, to quantify a horse's ability, or inability, to negotiate the various distances at which horse races are run. It is calculated based on an analysis of the horse's pedigree.
Andrew Beyer is the author of four books on racing and was The Washington Post 's horse racing columnist [2] from 1978 to his retirement in 2016. He has been honored with the Walter Haight Award for career excellence by the National Turf Writers and Broadcasters and with a place on the Joe Hirsch Honor Roll at the National Museum of Racing and ...
Independent Chip Model. In poker, the Independent Chip Model (ICM), also known as the Malmuth–Harville method, [1] is a mathematical model that approximates a player's overall equity in an incomplete tournament. David Harville first developed the model in a 1973 paper on horse racing; [2] in 1987, Mason Malmuth independently rediscovered it ...
A daily double is a parimutuel wager offered by horse racing and greyhound racing tracks in North America. Bettors wager on the winners of two consecutive races, [1] pre-designated by the track for a particular race day. The wager is made before either of the two races is run, and is only successful if both of the selections are correct.
A Leibniz wheel or stepped drum is a cylinder with a set of teeth of incremental lengths which, when coupled to a counting wheel, can be used in the calculating engine of a class of mechanical calculators. Invented by Leibniz in 1673, it was used for three centuries until the advent of the electronic calculator in the mid-1970s.