ThmDex – An index of mathematical definitions, results, and conjectures.
F11142
Formulation 0
Let $M = (X, \mathcal{F}, \mu)$ be a D1158: Measure space such that
(i) $f_0, f_1, f_2, \cdots : X \to [- \infty, \infty]$ are each a D5600: Basic Borel function on $M$
(ii) \begin{equation} \forall \, n \in \mathbb{N} : f_n \overset{a.e.}{\geq} 0 \end{equation}
Then
(1) \begin{equation} \int_X \liminf_{n \to \infty} f_n \,d \mu \leq \liminf_{n \to \infty} \int_X f_n \,d \mu \end{equation}
(2) \begin{equation} \int_X \limsup_{n \to \infty} f_n \,d \mu \geq \limsup_{n \to \infty} \int_X f_n \,d \mu \end{equation}