Final answer:
The question is about Fatou's Lemma in Mathematics.
Step-by-step explanation:
The given question is related to Mathematics.
The concept being discussed here is Fatou's Lemma in measure theory, which is a topic in advanced mathematical analysis.
Fatou's Lemma states that for a sequence of non-negative measurable functions, {fn}, if the limit of the sequence exists, then the integral of the limit function is less than or equal to the lim inf of the integrals of the sequence functions.