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martingale    音标拼音: [m'ɑrtɪŋ,el]
n. 马颔疆;支索;倍赌

马颔疆;支索;倍赌

martingale
n 1: a harness strap that connects the nose piece to the girth;
prevents the horse from throwing back its head
2: spar under the bowsprit of a sailboat [synonym: {dolphin
striker}, {martingale}]

Martingale \Mar"tin*gale\, Martingal \Mar"tin*gal\, n. [F.
martingale; cf. It. martingala a sort of hose, martingale,
Sp. martingala a greave, cuish, martingale, Sp. alm['a]rtaga
a kind of bridle.]
1. A strap fastened to a horse's girth, passing between his
fore legs, and fastened to the bit, or now more commonly
ending in two rings, through which the reins pass. It is
intended to hold down the head of the horse, and prevent
him from rearing.
[1913 Webster]

2. (Naut.) A lower stay of rope or chain for the jib boom or
flying jib boom, fastened to, or reeved through, the
dolphin striker. Also, the dolphin striker itself.
[1913 Webster]

3. (Gambling) The act of doubling, at each stake, that which
has been lost on the preceding stake; also, the sum so
risked; -- metaphorically derived from the bifurcation of
the martingale of a harness. Called also {Martingale
strategy}. Such a betting strategy does not change the
overall likelihood of winning, but in a short run it
increases the probability of winning a small sum,
balancing it against an increased probability of losing a
large sum. [Cant] --Thackeray.
[1913 Webster PJC]


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  • Martingale (probability theory) - Wikipedia
    In probability theory, a martingale is a stochastic process in which the expected value of the next observation, given all prior observations, is equal to the most recent value In other words, the conditional expectation of the next value, given the past, is equal to the present value
  • The Ultimate Martingale Theory Guide - numberanalytics. com
    Explore martingale concepts in probability theory, covering definitions, key theorems, convergence ideas, and practical examples
  • MARTINGALES AND THEIR APPLICATIONS
    We will introduce the notion of a martingale and explore some key martingale results We will also explore several examples of martingales in discrete and continuous time such as Polya’s urn and Brownian motion
  • Local martingale - Wikipedia
    In mathematics, a local martingale is a type of stochastic process, satisfying the localized version of the martingale property
  • Introduction to Martingales - Duke University
    Informally a martingale is simply a stochastic process Mt defined on some probability space (Ω, F, P) and indexed by some ordered set T that is “con-ditionally constant,” i e , whose predicted value at any future time s > t is the same as its present value at the time t of prediction
  • What Is a Martingale, and Does Your Horse Need One?
    In reality, a martingale is a piece of tack used in both English and Western riding disciplines Regardless of the discipline, a martingale’s main purpose is to help manage how high a horse can raise his head
  • Martingale -- from Wolfram MathWorld
    The concept of martingales is due to Lévy, and it was developed extensively by Doob A one-dimensional random walk with steps equally
  • MARTINGALE Definition Meaning - Merriam-Webster
    The meaning of MARTINGALE is a device for steadying a horse's head or checking its upward movement that typically consists of a strap fastened to the girth, passing between the forelegs, and bifurcating to end in two rings through which the reins pass
  • Martingale System: What It Is and How It Works in Investing
    The martingale system is a system of investing in which the dollar value of investments continually doubles after losses, or the position size increases with the lowering portfolio size
  • Introduction to Martingales - Duke University
    If Mt is a martingale and a < b are real numbers, denote by ν(t) [a,b] the number of upcrossings of the interval [a, b] by Ms prior to time t, i e , the number of times Ms passes from below a to above b at times 0 ≤ s ≤ t





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