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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
    The martingale problem is a framework in stochastic analysis for characterizing solutions to stochastic differential equations (SDEs) through martingale conditions
  • 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
  • Martingales - Yale University
    This fact is not as useful as one might think for getting bounds: given a martingale, it is almost always better to work with the martingale directly and then apply Jensen's inequality or f afterwards to get the desired bound
  • The Ultimate Martingale Theory Guide - numberanalytics. com
    Explore martingale concepts in probability theory, covering definitions, key theorems, convergence ideas, and practical examples
  • 18. 600 Probability and Random Variables F2019: Supplementary notes
    In this context, the martingale condition states informally that “The expected value of the stock tomorrow, given all I know today, is the value of the stock today ”
  • 17. 1: Introduction to Martingalges - Statistics LibreTexts
    The term martingale originally referred to a portion of the harness of a horse, and was later used to describe gambling strategies, such as the one used in the Petersburg paradox, in which bets are doubled when a game is lost
  • Martingales: Definitions and Examples | Springer Nature Link
    Martingale theory is a cornerstone to stochastic analysis and is included in this book from that perspective This chapter introduces the theory with examples and their basic properties
  • Martingale -- from Wolfram MathWorld
    (Feller 1971, p 210) The term was first used to describe a type of wagering in which the bet is doubled or halved after a loss or win, respectively The concept of martingales is due to Lévy, and it was developed extensively by Doob A one-dimensional random walk with steps equally likely in either direction () is an example of a martingale
  • 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
  • MAT 235B - UC Davis
    Sum of mean-zero independent r v ’s: if ξ1, ξ2, are independent and Eξi = 0, then the sequence Sn given by S0 = 0, Sn = ξ1 + · · · + ξn for n ≥ 1, is a martingale





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