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Aproximadamente 86 registro(s) hasta el momento: (journal)

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Recurso libre

Canonical Decompositions of Certain Generalized Brownian Bridges
Alili, Larbi; ETH Zurich

Formato:	Peer-reviewed Article,
Enlaces:	We define a generalized Brownian bridge and we provide some information about its filtration. Two decompositions of this process as a semi-martingale are given. The first one is a Volterra decomposition and the second one is its canonical decomposition in…
Fecha:	2002-01-01
Recurso:	Electronic communications in probability

Recurso libre

Further Exponential Generalization of Pitman's $2M-X$ Theorem
Baudoin, Fabrice; Université Paris 6 et Paris 7

Formato:	Peer-reviewed Article,
Enlaces:	We present a class of processes which enjoy an exponential analogue of Pitman's $2M-X$ theorem, improving hence some works of H. Matsumoto and M. Yor.
Fecha:	2002-01-01
Recurso:	Electronic communications in probability

Recurso libre

Asymptotics for Products of Sums and U-statistics
Rempala, Grzegorz; University of Louisville - Wesolowski, Jacek; Politechnika Warszawska

Formato:	Peer-reviewed Article,
Enlaces:	The product of subsequent partial sums of independent, identically distributed, square integrable, positive random variables is asymptotically lognormal. The result extends in a rather routine way to non-degenerate U-statistics.
Fecha:	2002-01-01
Recurso:	Electronic communications in probability

Recurso libre

Some Extensions of an Inequality of Vapnik and Chervonenkis
Panchenko, Dmitriy; University of New Mexico

Formato:	Peer-reviewed Article,
Enlaces:	The inequality of Vapnik and Chervonenkis controls the expectation of the function  by its sample average uniformly over a VC-major class of functions taking into account the size of the expectation. Using Talagrand's kernel method we prove a similar result…
Fecha:	2002-01-01
Recurso:	Electronic communications in probability

Recurso libre

Option Price When the Stock is a Semimartingale
Klebaner, Fima; University Melbourne

Formato:	Peer-reviewed Article,
Enlaces:	The purpose of this note is to give a PDE satisfied by a call option when the price process is a semimartingale. The main result generalizes the PDE in the case when the stock price is a diffusion. Its proof…
Fecha:	2002-01-01
Recurso:	Electronic communications in probability

Recurso libre

Inclusion-Exclusion Redux
Kessler, David; Bar-Ilan University - Schiff, Jeremy; Bar-Ilan University

Formato:	Peer-reviewed Article,
Enlaces:	We present a reordered version of the inclusion-exclusion principle, which is useful when computing the probability of a union of events which are close to independent. The advantages of this formulation are demonstrated in the context of 3 classic problems…
Fecha:	2002-01-01
Recurso:	Electronic communications in probability

Recurso libre

Tightness of the Student $t$-Statistic
Griffin, Philip S.; Syracuse University

Formato:	Peer-reviewed Article,
Enlaces:	Let $X, X_1, X_2, \dots $ be a sequence of nondegenerate, independent and identically distributed random variables and set $S_n=X_1+\dots +X_n$, $V_n^2=X_1^2+\dots +X_n^2$. We answer a question of Gotze, Gine and Mason by providing a simple necessary and sufficient condition…
Fecha:	2002-01-01
Recurso:	Electronic communications in probability

Recurso libre

A Non-Ballistic Law of Large Numbers for Random Walks in I.I.D. Random Environment
Zerner, Martin P. W.; Stanford University

Formato:	Peer-reviewed Article,
Enlaces:	We prove that random walks in i.i.d. random environments which oscillate in a given direction have velocity zero with respect to that direction. This complements existing results thus giving a general law of large numbers under the only assumption of…
Fecha:	2002-01-01
Recurso:	Electronic communications in probability

Recurso libre

Continuous Ocone Martingales as Weak Limits of Rescaled Martingales
Zanten, Harry van; Vrije Universiteit Amsterdam

Formato:	Peer-reviewed Article,
Enlaces:	Consider a martingale $M$ with bounded jumps and two sequences $a_n, b_n \to \infty$. We show that if the rescaled martingales $$ M^n_t =\frac{1}{\sqrt{a_n}}M_{b_n t}$$ converge weakly, then the limit is necessarily a continous Ocone martingale. Necessary and sufficient conditions…
Fecha:	2002-01-01
Recurso:	Electronic communications in probability

Recurso libre

10.

A Representation for Non-Colliding Random Walks
O'Connell, Neil; BRIMS, HP Labs - Yor, Marc; Universite Pierre et Marie Curie

Formato:	Peer-reviewed Article,
Enlaces:	We define a sequence of mappings $\Gamma_k:D_0(R_+)^k\to D_0(R_+)^k$ and prove the following result: Let $N_1,\ldots,N_n$ be the counting functions of independent Poisson processes on $R_+$ with respective intensities $\mu_1 < \mu_2 < \cdots < \mu_n$. The conditional law of $N_1,\ldots,N_n$,…
Fecha:	2002-01-01
Recurso:	Electronic communications in probability

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11.

A Monotonicity Result for Hard-core and Widom-Rowlinson Models on Certain $d$-dimensional Lattices
Häggström, Olle; Chalmers University of Technology and Goteborg University

Formato:	Peer-reviewed Article,
Enlaces:	For each $d\geq 2$, we give examples of $d$-dimensional periodic lattices on which the hard-core and Widom-Rowlinson models exhibit a phase transition which is monotonic, in the sense that there exists a critical value $\lambda_c$ for the activity parameter $\lambda$,…
Fecha:	2002-01-01
Recurso:	Electronic communications in probability

Recurso libre

12.

Geodesics and Recurrence of Random Walks in Disordered Systems
Boivin, Daniel; Université de Bretagne Sud - Derrien, Jean-Marc; Université de Bretagne Sud

Formato:	Peer-reviewed Article,
Enlaces:	In a first-passage percolation model on the square lattice $Z^2$, if the passage times are independent then the number of geodesics is either $0$ or $+\infty$. If the passage times are stationary, ergodic and have a finite moment of order…
Fecha:	2002-01-01
Recurso:	Electronic communications in probability

Recurso libre

13.

Fill's Algorithm for Absolutely Continuous Stochastically Monotone Kernels
Machida, Motoya; Tennessee Technological University

Formato:	Peer-reviewed Article,
Enlaces:	Fill, Machida, Murdoch, and Rosenthal (2000) presented their algorithm and its variants to extend the perfect sampling algorithm of Fill (1998) to chains on continuous state spaces. We consider their algorithm for absolutely continuous stochastically monotone kernels, and show the…
Fecha:	2002-01-01
Recurso:	Electronic communications in probability

Recurso libre

14.

State Classification for a Class of Interacting Superprocesses with Location Dependent Branching
Wang, Hao; University of Oregon

Formato:	Peer-reviewed Article,
Enlaces:	The spatial structure of a class of superprocesses which arise as limits in distribution of a class of interacting particle systems with location dependent branching is investigated. The criterion of their state classification is obtained. Their effective state space is…
Fecha:	2002-01-01
Recurso:	Electronic communications in probability

Recurso libre

15.

Existence and uniqueness of solutions for BSDEs with locally Lipschitz coefficient
Bahlali, Khaled; CNRS Luminy

Formato:	Peer-reviewed Article,
Enlaces:	We deal with multidimensional backward stochastic differential equations (BSDE) with locally Lipschitz coefficient in both variables $ y,z $ and an only square integrable terminal data. Let $ L_N $ be the Lipschitz constant of the coefficient on the ball…
Fecha:	2002-01-01
Recurso:	Electronic communications in probability

Recurso libre

16.

Almost Sure Stability of Linear Ito-Volterra Equations with Damped Stochastic Perturbations
Appleby, John A. D.; Dublin City University

Formato:	Peer-reviewed Article,
Enlaces:	In this paper we study the a.s. convergence of all solutions of the Ito-Volterra equation \[ dX(t) = (AX(t) + \int_{0}^{t} K(t-s)X(s),ds)\,dt + \Sigma(t)\,dW(t) \] to zero. $A$ is a constant $d\times d$ matrix, $K$ is a $d\times d$ continuous…
Fecha:	2002-01-01
Recurso:	Electronic communications in probability

Recurso libre

17.

Optional processes with non-exploding realized power variation along stopping times are làglàd
Kühn, Christoph; Goethe-University Frankfurt - Teusch, Marc; Deloitte Germany

Formato:	Peer-reviewed Article,
Enlaces:	We prove that an optional process of non-exploding realized power variation along stopping times possesses almost surely làglàd paths. This result is useful for the analysis of some imperfect market models in mathematical finance. In the finance applications variation naturally…
Fecha:	2011-01-01
Recurso:	Electronic communications in probability

Recurso libre

18.

Limit distribution of degrees in random family trees
Backhausz, Agnes; Eotvos Lorand University, Department of Probability Theory and Statistics

Formato:	Peer-reviewed Article,
Enlaces:	In a one-parameter model for evolution of random trees, which also includes the Barabasi-Albert random tree [1], almost sure behavior and the limiting distribution of the degree of a vertex in a fixed position are examined. A functional central limit…
Fecha:	2011-01-01
Recurso:	Electronic communications in probability

Recurso libre

19.

A convergent series representation for the density of the supremum of a stable process
Hubalek, Friedrich; Vienna University of Technology - Kuznetsov, Alexey; York University

Formato:	Peer-reviewed Article,
Enlaces:	We study the density of the supremum of a strictly stable Levy process. We prove that for almost all values of the index $\alpha$ - except for a dense set of Lebesgue measure zero - the asymptotic series which were…
Fecha:	2011-01-01
Recurso:	Electronic communications in probability

Recurso libre

20.

Generalized Laguerre Unitary Ensembles and an interacting particles model with a wall
Defosseux, Manon; MAP5

Formato:	Peer-reviewed Article,
Enlaces:	We introduce and study a new interacting particles model with a wall and two kinds of interactions - blocking and pushing - which maintain particles in a certain order. We show that it involves a random matrix model.
Fecha:	2011-01-01
Recurso:	Electronic communications in probability

Recurso libre

21.

A Remark on Localization for Branching Random Walks in Random Environment
Heil, Hadrian; Universität Tübingen - Nakashima, Makoto; Kyoto University

Formato:	Peer-reviewed Article,
Enlaces:	We prove a localization-result for branching random walks in random environment, namely that if the process does not die out, the most populated site will infinitely often contain more than a fixed percentage of the population. This had been proven…
Fecha:	2011-01-01
Recurso:	Electronic communications in probability

Recurso libre

22.

Asymptotic constants for minimal distance in the central limit theorem
Rio, Emmanuel; Université de Versaiiles Saint Quentin

Formato:	Peer-reviewed Article,
Enlaces:	In this paper, we generalize the asymptotic result of Esseen (1958) concerning the Wasserstein distance of order one in the mean central limit theorem to the Wasserstein distances of order $r$ for $r \in ]1,2]$.
Fecha:	2011-01-01
Recurso:	Electronic communications in probability

Recurso libre

23.

Recursions and tightness for the maximum of the discrete, two dimensional Gaussian Free Field
Bolthausen, Erwin; Universität Zürich - Deuschel, Jean-Dominique; Technische Universität Berlin - Zeitouni, Ofer; University of Minnesota

Formato:	Peer-reviewed Article,
Enlaces:	We consider the maximum of the discrete two dimensional Gaussian free field in a box, and prove the existence of a (dense) deterministic subsequence along which the maximum, centered at its mean, is tight. The method…
Fecha:	2011-01-01
Recurso:	Electronic communications in probability

Recurso libre

24.

A note on existence and uniqueness for solutions of multidimensional reflected BSDEs
Chassagneux, Jean François; Université d'Evry - Val d'Essonne - Elie, Romuald; Université Paris Dauphine - Kharroubi, Idris; Université Paris Dauphine

Formato:	Peer-reviewed Article,
Enlaces:	In this note, we provide an innovative and simple approach for proving the existence of a unique solution for multidimensional reflected BSDEs associated to switching problems. Getting rid of a monotonicity assumption on the driver function, this approach simplifies and…
Fecha:	2011-01-01
Recurso:	Electronic communications in probability

Recurso libre

25.

A family of exceptional parameters for non-uniform self-similar measures
Neunhäuserer, Jörg; TU Clausthal / TFH Berlin

Formato:	Peer-reviewed Article,
Enlaces:	We present plane algebraic curves that have segments of points for which non uniform self-similar measures get singular. We calculate appropriate points on the curves using Mathematica. These points are in the parameter domain where we generically have absolute continuity…
Fecha:	2011-01-01
Recurso:	Electronic communications in probability

Recurso libre

26.

On a species survival model
Ben-Ari, Iddo; University of Connecticut - Matzavinos, Anastasios; Iowa State University - Roitershtein, Alexander; Iowa State University

Formato:	Peer-reviewed Article,
Enlaces:	In this paper we provide some sharp asymptotic results for a stochastic model of species survival recently proposed by Guiol, Machado, and Schinazi.
Fecha:	2011-01-01
Recurso:	Electronic communications in probability

Recurso libre

27.

Correction to "The measurability of hitting times"
Bass, Richard; University of Connecticut

Formato:	Peer-reviewed Article,
Enlaces:	We correct an error in Electronic Communications in Probability, Vol 15 (2010), paper 10
Fecha:	2011-01-01
Recurso:	Electronic communications in probability

Recurso libre

28.

A Reflection Type Problem for the Stochastic 2-D Navier-Stokes Equations with Periodic Conditions
Barbu, Viorel; University of Iasi (Romania) - Da Prato, Giuseppe; Scuoal Normale Superiore Pisa - Tubaro, Luciano; Dept. Mathematics- University of Trento

Formato:	Peer-reviewed Article,
Enlaces:	We prove the existence of a solution for the Kolmogorov equation associated with a reflection problem for 2-D stochastic Navier-Stokes equations with periodic spatial conditions and the corresponding stream flow in a closed ball of a Sobolev space of the…
Fecha:	2011-01-01
Recurso:	Electronic communications in probability

Recurso libre

29.

Stability of the stochastic heat equation in $L^1([0,1])$
Fournier, Nicolas; Université Paris Est - Printems, Jacques; Université Paris Est

Formato:	Peer-reviewed Article,
Enlaces:	We consider the white-noise driven stochastic heat equation on $[0,1]$ with Lipschitz-continuous drift and diffusion coefficients. We derive an inequality for the $L^1([0,1])$-norm of the difference between two solutions. Using some martingale arguments, we show that this inequality provides some…
Fecha:	2011-01-01
Recurso:	Electronic communications in probability

Recurso libre

30.

On the transience of random interlacements
Rath, Balazs; ETH, Zurich - Sapozhnikov, Artem; ETH, Zurich

Formato:	Peer-reviewed Article,
Enlaces:	We consider the interlacement Poisson point process on the space of doubly-infinite $\mathbb{Z}^d$-valued trajectories modulo time-shift, tending to infinity at positive and negative infinite times. The set of vertices and edges visited by at least one of these trajectories is…
Fecha:	2011-01-01
Recurso:	Electronic communications in probability

Recurso libre

31.

On the one-sided exit problem for fractional Brownian motion
Aurzada, Frank; Technische Universität Berlin

Formato:	Peer-reviewed Article,
Enlaces:	We consider the one-sided exit problem for fractional Brownian motion (FBM), which is equivalent to the question of the distribution of the lower tail of the maximum of FBM on the unit interval. We improve the bounds given by Molchan…
Fecha:	2011-01-01
Recurso:	Electronic communications in probability

Recurso libre

32.

Random laminations and multitype branching processes
Curien, Nicolas; DMA Ens Paris - Peres, Yuval; Microsoft Research Redmond

Formato:	Peer-reviewed Article,
Enlaces:	We consider multitype branching processes arising in the study of random laminations of the disk. We classify these processes according to their subcritical or supercritical behavior and provide Kolmogorov-type estimates in the critical case corresponding to the random recursive lamination…
Fecha:	2011-01-01
Recurso:	Electronic communications in probability

Recurso libre

33.

The tail of the maximum of Brownian motion minus a parabola
Groeneboom, Piet; Delft University of Technology - Temme, Nico M.; CWI

Formato:	Peer-reviewed Article,
Enlaces:	We analyze the tail behavior of the maximum $N$ of $\{W(t)-t^2:t\ge0\}$, where $W$ is standard Brownian motion on $[0,\infty)$, and give an asymptotic expansion for ${\mathbb P}\{N\ge x\}$, as $x\to\infty$. This extends a first order result on the tail behavior,…
Fecha:	2011-01-01
Recurso:	Electronic communications in probability

Recurso libre

34.

Internal DLA generated by cookie random walks on Z
Raimond, Olivier; University Paris 10 (Nanterre) - Schapira, Bruno; University Paris Sud 11 (Orsay)

Formato:	Peer-reviewed Article,
Enlaces:	We prove a law of large numbers for the right boundary in the model of internal DLA generated by cookie random walks in dimension one. The proof is based on stochastic recursions techniques.
Fecha:	2011-01-01
Recurso:	Electronic communications in probability

Recurso libre

35.

White and colored Gaussian noises as limits of sums of random dilations and translations of a single function
Gripenberg, Gustaf; Aalto University

Formato:	Peer-reviewed Article,
Enlaces:	It is shown that a stochastic process obtained by taking random sums of dilations and translations of a given function converges to Gaussian white noise if a dilation parameter grows to infinity and that it converges to Gaussian colored noise…
Fecha:	2011-01-01
Recurso:	Electronic communications in probability

Recurso libre

36.

On the construction of Feller processes with unbounded coefficients
Böttcher, Björn; TU Dresden

Formato:	Peer-reviewed Article,
Enlaces:	Construction methods for Feller processes which require bounded coefficients are extended to the case of unbounded coefficients.
Fecha:	2011-01-01
Recurso:	Electronic communications in probability

Recurso libre

37.

Multiple geodesics with the same direction
Coupier, David; Laboratoire Paul Painlevé, UMR 8524, Université Lille 1

Formato:	Peer-reviewed Article,
Enlaces:	The directed last-passage percolation (LPP) model with independent exponential times is considered. We complete the study of asymptotic directions of infinite geodesics, started by Ferrari and Pimentel [5]. In particular, using a recent result of [3] and a local modification…
Fecha:	2011-01-01
Recurso:	Electronic communications in probability

Recurso libre

38.

Invariant measures of stochastic $2D$ Navier-Stokes equation driven by $\alpha$-stable processes
Dong, Zhao; Institute of Applied Mathematics, Academy of Mathematics and Systems Sciences, Academia Sinica, P.R.China - Xu, Lihu; Department of Mathematics, Brunel University, Uxbridge UB8 3PH, ENGLAND - Zhang, Xicheng; Wuhan University

Formato:	Peer-reviewed Article,
Enlaces:	In this note we prove the well-posedness for stochastic $2D$ Navier-Stokes equation driven by general Lévy processes (in particular, $\alpha$-stable processes), and obtain the existence of invariant measures.
Fecha:	2011-01-01
Recurso:	Electronic communications in probability

Recurso libre

39.

Analysis of a class of Cannibal urns
Kuba, Markus; Technische Universität Wien

Formato:	Peer-reviewed Article,
Enlaces:	In this note we study a class of $2\times 2$ Polya-Eggenberger urn models, which serves as a stochastic model in biology describing cannibalistic behavior of populations. A special case was studied before by Pittel using asymptotic approximation techniques, and more…
Fecha:	2011-01-01
Recurso:	Electronic communications in probability

Recurso libre

40.

A multiplicative short proof for the unimodality of stable densities
Simon, Thomas; Université Lille 1

Formato:	Peer-reviewed Article,
Enlaces:	Revisiting an article by Chernin and Ibragimov on unimodality of stable laws, we show that their approach to deduce the general case from the extremal ones, whose completion contained an error as discovered later by Kanter, can be carried out…
Fecha:	2011-01-01
Recurso:	Electronic communications in probability

Recurso libre

41.

Absolute continuity of the limiting eigenvalue distribution of the random Toeplitz matrix
Sen, Arnab; University of Cambridge - Virag, Balint; University of Toronto

Formato:	Peer-reviewed Article,
Enlaces:	We show that the limiting eigenvalue distribution of random symmetric Toeplitz matrices is absolutely continuous with density bounded by 8, partially answering a question of Bryc, Dembo and Jiang (2006). The main tool used in the proof is a spectral…
Fecha:	2011-01-01
Recurso:	Electronic communications in probability

Recurso libre

42.

Correlation Inequalities for Edge-Reinforced Random Walk
Merkl, Franz; University of Munich - Rolles, Silke W.W.; Technische Universität München

Formato:	Peer-reviewed Article,
Enlaces:	We prove correlation inequalities for linearly edge-reinforced random walk. These correlation inequalities concern the first entry tree, i.e. the tree of edges used to enter any vertex for the first time. They also involve the asymptotic fraction of time spent…
Fecha:	2011-01-01
Recurso:	Electronic communications in probability

Recurso libre

43.

Simulation of a stochastic process in a discontinuous layered medium
Lejay, Antoine; INRIA

Formato:	Peer-reviewed Article,
Enlaces:	In this note, we provide a simulation algorithm for a diffusion process in a layered media. Our main tools are the properties of the Skew Brownian motion and a path decomposition technique for simulating occupation times.
Fecha:	2011-01-01
Recurso:	Electronic communications in probability

Recurso libre

44.

Construction of a short path in high-dimensional first passage percolation
Couronné, Olivier; Universite Paris-Ouest - Enriquez, Nathanaël; Universite Paris-Ouest - Gerin, Lucas; Universite Paris-Ouest

Formato:	Peer-reviewed Article,
Enlaces:	For first passage percolation in $\mathbb{Z}^d$ with large $d$, we construct a path connecting the origin to $\{x_1 =1\}$, whose passage time has optimal order $\log d/d$. Besides, an improved lower bound for the "diagonal" speed of the cluster combined…
Fecha:	2011-01-01
Recurso:	Electronic communications in probability

Recurso libre

45.

Gaussian measures of dilations of convex rotationally symmetric sets in $\mathbb{C}^n$
Tkocz, Tomasz; University of Warsaw

Formato:	Peer-reviewed Article,
Enlaces:	We consider the complex case of the S-inequality. It concerns the behaviour of Gaussian measures of dilations of convex and rotationally symmetric sets in $\mathbb{C}^n$. We pose and discuss a conjecture that among all such sets measures of cylinders decrease…
Fecha:	2011-01-01
Recurso:	Electronic communications in probability

Recurso libre

46.

On the spectrum of sum and product of non-hermitian random matrices
Bordenave, Charles; CNRS and University of Toulouse

Formato:	Peer-reviewed Article,
Enlaces:	In this note, we revisit the work of T. Tao and V. Vu on large non-hermitian random matrices with independent and identically distributed (i.i.d.) entries with mean zero and unit variance. We prove under weaker assumptions that the limit spectral…
Fecha:	2011-01-01
Recurso:	Electronic communications in probability

Recurso libre

47.

Kanter random variable and positive free stable distributions
Demni, Nizar; Rennes 1 University

Formato:	Peer-reviewed Article,
Enlaces:	According to a representation due to M. Kanter, the density of some power of a positive stable distribution is a completely monotone function. In this paper, we first derive its representative Bernstein measure which also describes the law of some…
Fecha:	2011-01-01
Recurso:	Electronic communications in probability

Recurso libre

48.

Indicator fractional stable motions
Jung, Paul H; Sogang University

Formato:	Peer-reviewed Article,
Enlaces:	Using the framework of random walks in random scenery, Cohen and Samorodnitsky (2006) introduced a family of symmetric $\alpha$-stable motions called local time fractional stable motions. When $\alpha=2$, these processes are precisely fractional Brownian motions with $1/2 < H <…
Fecha:	2011-01-01
Recurso:	Electronic communications in probability

Recurso libre

49.

The growth constants of lattice trees and lattice animals in high dimensions
Mejia Miranda, Yuri; University of British Columbia - Slade, Gordon; University of British Columbia

Formato:	Peer-reviewed Article,
Enlaces:	We prove that the growth constants for nearest-neighbour lattice trees and lattice (bond) animals on the integer lattice $\mathbb{Z}^d$ are asymptotic to $2de$ as the dimension goes to infinity, and that their critical one-point functions converge to $e$. Similar results…
Fecha:	2011-01-01
Recurso:	Electronic communications in probability

Recurso libre

50.

Marked metric measure spaces
Depperschmidt, Andrej; University of Freiburg - Greven, Andreas; University of Erlangen - Pfaffelhuber, Peter; University of Freiburg

Formato:	Peer-reviewed Article,
Enlaces:	A marked metric measure space (mmm-space) is a triple $(X,r,μ)$, where $(X,r)$ is a complete and separable metric space and $μ$ is a probability measure on $X \times I$ for some Polish space $I$ of possible marks. We study the…
Fecha:	2011-01-01
Recurso:	Electronic communications in probability