martingale (redirected from martingal)

martingale

1. a strap from the reins to the girth of a horse preventing it from carrying its head too high

2. any gambling system in which the stakes are raised, usually doubled, after each loss

3. Nautical

a. a chain or cable running from a jib boom to the dolphin striker, serving to counteract strain

b. another term for dolphin striker

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martingale [′märt·ən‚gāl]

(statistics)

A sequence of random variablesx₁,x₂, …, where the conditional expected value ofx_{n+ 1}givenx₁,x₂, …,x_n, equalsx_n.