Some results concerning ideal and classical uniform integrability and mean convergence

• Al Hayek, Nour ^[1] ; Ordóñez Cabrera, Manuel ^[2] ; Rosalsky, Andrew ^[3] ; Ünver, Mehmet ^[4] ; Volodin, Andrei ^[5]
  1. [1] Kazan Federal University

     Kazan Federal University

     Rusia

     
  2. [2] Universidad de Sevilla

     Universidad de Sevilla

     Sevilla, España

     
  3. [3] University of Florida

     University of Florida

     Estados Unidos

     
  4. [4] Ankara University

     Ankara University

     Turquía

     
  5. [5] University of Regina

     University of Regina

     Canadá

     

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• Localización: Collectanea mathematica, ISSN 0010-0757, Vol. 74, Fasc. 1, 2023, págs. 1-25
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • In this article, the concept of J-uniform integrability of a sequence of random variables {Xk} with respect to {ank} is introduced where J is a non-trivial ideal of subsets of the set of positive integers and {ank} is an array of real numbers. We show that this concept is weaker than the concept of {Xk} being uniformly integrable with respect to {ank} and is more general than the concept of B-statistical uniform integrability with respect to {ank}. We give two characterizations of J-uniform integrability with respect to {ank}. One of them is a de La Vallée Poussin type characterization. For a sequence of pairwise independent random variables {Xk} which is J-uniformly integrable with respect to {ank}, a law of large numbers with mean ideal convergence is proved. We also obtain a version without the pairwise independence assumption by strengthening other conditions. Supplements to the classical Mean Convergence Criterion are also established.