Displaying 201 – 220 of 255

Showing per page

The law of large numbers and a functional equation

Maciej Sablik (1998)

Annales Polonici Mathematici

We deal with the linear functional equation (E) g ( x ) = i = 1 r p i g ( c i x ) , where g:(0,∞) → (0,∞) is unknown, ( p , . . . , p r ) is a probability distribution, and c i ’s are positive numbers. The equation (or some equivalent forms) was considered earlier under different assumptions (cf. [1], [2], [4], [5] and [6]). Using Bernoulli’s Law of Large Numbers we prove that g has to be constant provided it has a limit at one end of the domain and is bounded at the other end.

The quenched invariance principle for random walks in random environments admitting a bounded cycle representation

Jean-Dominique Deuschel, Holger Kösters (2008)

Annales de l'I.H.P. Probabilités et statistiques

We derive a quenched invariance principle for random walks in random environments whose transition probabilities are defined in terms of weighted cycles of bounded length. To this end, we adapt the proof for random walks among random conductances by Sidoravicius and Sznitman (Probab. Theory Related Fields129 (2004) 219–244) to the non-reversible setting.

The rate of convergence of option prices when general martingale discrete-time scheme approximates the Black-Scholes model

Yuliya Mishura (2015)

Banach Center Publications

We take the martingale central limit theorem that was established, together with the rate of convergence, by Liptser and Shiryaev, and adapt it to the multiplicative scheme of financial markets with discrete time that converge to the standard Black-Scholes model. The rate of convergence of put and call option prices is shown to be bounded by n - 1 / 8 . To improve the rate of convergence, we suppose that the increments are independent and identically distributed (but without binomial or similar restrictions...

Un critère de tension dans les espaces de Besov-Orlicz et applications au problème du temps d’occupation

Mohamed Ait Ouahra, Abdelghani Kissami, Aissa Sghir (2011)

Annales mathématiques Blaise Pascal

Dans ce travail, nous présentons une nouvelle caractérisation de la norme des espaces de Besov-Orlicz associés à la 𝒩 -fonction exponentielle M β pour β > 0 . Nous utilisons cette nouvelle norme et un lemme de Marcus et Pisier [15], pour démontrer un critère de tension et de régularité dans les espaces de Besov-Orlicz pour β 1 . Nous étudions ensuite dans les espaces de Besov-Orlicz pour β = 1 , des théorèmes limites pour les mesures d’occupations du temps local du processus stable symétrique d’indice 1 < α 2 , ce qui...

Currently displaying 201 – 220 of 255