Lineability, algebrability, and sequences of random variables

We show that, when omitting one condition in several well-known convergence results from probability and measure theory (such as the Dominated Convergence Theorem, Fatou's Lemma, or the Strong Law of Large Numbers), we can construct “very large” (in terms of the cardinality of their systems of...

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Detalles Bibliográficos
Autores: Fernández Sánchez, Juan, Seoane Sepúlveda, Juan Benigno, Trutschnig, Wolfgang
Tipo de recurso: artículo
Fecha de publicación:2022
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/72025
Acceso en línea:https://hdl.handle.net/20.500.14352/72025
Access Level:acceso abierto
Palabra clave:Lineability
Algebrability
Vector series
Probability theory
Random variable
Stochastic process
Descripción
Sumario:We show that, when omitting one condition in several well-known convergence results from probability and measure theory (such as the Dominated Convergence Theorem, Fatou's Lemma, or the Strong Law of Large Numbers), we can construct “very large” (in terms of the cardinality of their systems of generators) spaces and algebras of counterexamples. Moreover, we show that on the probability space $([0,1],\mathcal {B}([0,1]),\lambda )$ the families of sequences of random variables converging in probability but (i) not converging outside a set of measure 0 or (ii) not converging in arithmetic mean are also “very large”.