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  2. Martingale (betting system) - Wikipedia

    en.wikipedia.org/wiki/Martingale_(betting_system)

    A martingale is a class of betting strategies that originated from and were popular in 18th-century France. The simplest of these strategies was designed for a game in which the gambler wins the stake if a coin comes up heads and loses if it comes up tails.

  3. Labouchère system - Wikipedia

    en.wikipedia.org/wiki/Labouchère_system

    The Labouchère system, also called the cancellation system or split martingale, is a gambling strategy used in roulette.The user of such a strategy decides before playing how much money they want to win, and writes down a list of positive numbers that sum to the predetermined amount.

  4. Martingale (probability theory) - Wikipedia

    en.wikipedia.org/wiki/Martingale_(probability...

    A convex function of a martingale is a submartingale, by Jensen's inequality. For example, the square of the gambler's fortune in the fair coin game is a submartingale (which also follows from the fact that X n 2 − n is a martingale). Similarly, a concave function of a martingale is a supermartingale.

  5. Gambler's ruin - Wikipedia

    en.wikipedia.org/wiki/Gambler's_ruin

    In statistics, gambler's ruin is the fact that a gambler playing a game with negative expected value will eventually go bankrupt, regardless of their betting system.. The concept was initially stated: A persistent gambler who raises his bet to a fixed fraction of the gambler's bankroll after a win, but does not reduce it after a loss, will eventually and inevitably go broke, even if each bet ...

  6. Betting strategy - Wikipedia

    en.wikipedia.org/wiki/Betting_strategy

    A betting strategy (also known as betting system) is a structured approach to gambling, in the attempt to produce a profit. To be successful, the system must change the house edge into a player advantage — which is impossible for pure games of probability with fixed odds, akin to a perpetual motion machine. [ 1 ]

  7. Optional stopping theorem - Wikipedia

    en.wikipedia.org/wiki/Optional_stopping_theorem

    Let X τ denote the stopped process, it is also a martingale (or a submartingale or supermartingale, respectively). Under condition ( a ) or ( b ), the random variable X τ is well defined. Under condition ( c ) the stopped process X τ is bounded, hence by Doob's martingale convergence theorem it converges a.s. pointwise to a random variable ...

  8. Oscar's grind - Wikipedia

    en.wikipedia.org/wiki/Oscar's_grind

    Oscar's grind is the same as Martingale-based and Labouchère system in the sense that if there is an infinite amount to wager and time, every session will make a profit. [citation needed] Not meeting these conditions will result in an inevitable loss of the entire stake in the long run. Only 500 losses in a row can come from a 500 unit ...

  9. Gambling mathematics - Wikipedia

    en.wikipedia.org/wiki/Gambling_mathematics

    The mathematics of gambling is a collection of probability applications encountered in games of chance and can get included in game theory.From a mathematical point of view, the games of chance are experiments generating various types of aleatory events, and it is possible to calculate by using the properties of probability on a finite space of possibilities.