Results 1 to 10 of about 17,299 (94)

Some Classes of Two-Parameter Martingales

open access: yesAnnals of Probability, 1981
A class of two-parameter martingales, named "martingales with orthogonal increments" or "martingales of direction independent variation," is introduced. It is shown that this class, which is characterized by a sample function property, is included in the class of martingales of path independent variation and includes the class of strong martingales ...
Moshe Zakai
exaly   +4 more sources

Martingales and the characteristic functions of absorption time on bipartite graphs

open access: yesRoyal Society Open Science, 2021
Evolutionary graph theory investigates how spatial constraints affect processes that model evolutionary selection, e.g. the Moran process. Its principal goals are to find the fixation probability and the conditional distributions of fixation time, and ...
Travis Monk, André van Schaik
doaj   +1 more source

A stochastic card balance management problem with continuous and batch-type bilateral transactions

open access: yesOperations Research Perspectives, 2023
We study a stochastic continuous-review card balance management problem with two transaction patterns, namely, continuous and batch-type bilateral transactions, both in a Markovian environment.
Yonit Barron
doaj   +1 more source

Martingales and the fixation time of evolutionary graphs with arbitrary dimensionality

open access: yesRoyal Society Open Science, 2022
Evolutionary graph theory (EGT) investigates the Moran birth–death process constrained by graphs. Its two principal goals are to find the fixation probability and time for some initial population of mutants on the graph.
Travis Monk, André van Schaik
doaj   +1 more source

A Divergent, Two-Parameter, Bounded Martingale [PDF]

open access: yesProceedings of the American Mathematical Society, 1980
An example is given of a divergent, uniformly bounded martingale X = { X t : t ∈ T } X = \{ {X_t}:t \in T\} where the index t ranges over the set T of pairs of positive integers with the usual coordinatewise ordering.
Dubins, Lester E., Pitman, Jim
openaire   +1 more source

Orlicz–Hardy Weak Martingale Spaces for Two-parameter

open access: yesTaiwanese Journal of Mathematics, 2023
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Liu, Kaituo   +3 more
openaire   +1 more source

Optimal dual martingales, their analysis and application to new algorithms for Bermudan products [PDF]

open access: yes, 2012
In this paper we introduce and study the concept of optimal and surely optimal dual martingales in the context of dual valuation of Bermudan options, and outline the development of new algorithms in this context.
Huang, Junbo   +2 more
core   +2 more sources

Doob's maximal identity, multiplicative decompositions and enlargements of filtrations [PDF]

open access: yes, 2006
In the theory of progressive enlargements of filtrations, the supermartingale $Z_{t}=\mathbf{P}(g>t\mid \mathcal{F}_{t}) $ associated with an honest time g, and its additive (Doob-Meyer) decomposition, play an essential role. In this paper, we propose an
Nikeghbali, A., Yor, M.
core   +2 more sources

Self-dual continuous processes [PDF]

open access: yes, 2012
The important application of semi-static hedging in financial markets naturally leads to the notion of quasi self-dual processes which is, for continuous semimartingales, related to symmetry properties of both their ordinary as well as their stochastic ...
Rheinländer, Thorsten, Schmutz, Michael
core   +2 more sources

Exponential inequalities for martingales with applications [PDF]

open access: yes, 2015
The paper is devoted to establishing some general exponential inequalities for supermartingales. The inequalities improve or generalize many exponential inequalities of Bennett, Freedman, de la Pe\~{n}a, Pinelis and van de Geer.
Fan, Xiequan, Grama, Ion, Liu, Quansheng
core   +4 more sources

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