martingale

名词 n. 动词 v.
中文释义

英文释义

名词 n.
  1. A piece of harness used on a horse to keep it from raising its head above a desired point.
    — I’ll be bound, Lady Ashton understands every machine for breaking in the human mind, and there are as many as there are cannon-bit, martingales, and cavessons for young colts.
  2. A spar, or piece of rigging that strengthens the bowsprit.
  3. A stochastic process for which the conditional expectation of future values given the sequence of all prior values is equal to the current value.
    — If a gambler plays a fair game repeatedly, his payoff over time is a martingale.
  4. A gambling strategy in which one doubles the stake after each loss.
  5. A strap attached to the sword handle, preventing a sword being dropped if disarmed.
动词 v.
  1. To employ the martingale strategy in gambling.
    — The Russians were both martingaling it—doubling their bets when they lost.

词形变化

martingales plural martingal alternative martingales present,singular,third-person martingaling participle,present martingaled participle,past martingaled past martingal alternative

词汇关系

衍生词
anti-martingale martingality semimartingale submartingale supermartingale

词源

词源 1
From Middle French martingale, from Occitan martegalo, feminine form of martegal, an inhabitant of Martigues, which is from Latin maritima. Possibly merged with Spanish almártaga.
The meaning in gambling may come from an old usage of "à la martingale" to mean absurdly, foolishly.https://people.math.harvard.edu/~ctm/home/text/class/sem/html/home/notes/martingales/martingales.pdf
词源 2
From Middle French martingale, from Occitan martegalo, feminine form of martegal, an inhabitant of Martigues, which is from Latin maritima. Possibly merged with Spanish almártaga.
The meaning in gambling may come from an old usage of "à la martingale" to mean absurdly, foolishly.https://people.math.harvard.edu/~ctm/home/text/class/sem/html/home/notes/martingales/martingales.pdf
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