Question: Show the following. Let ( X , ) be a measurable space and f , g : X R be -measurable functions. Prove that {
Show the following.
Let (X,)be a measurable space andf,g:XR be -measurable functions. Prove that {xXef(x)g(x)+1}.
REFS
Definition of \Sigma-measurable Let be a -measurable on a nonempty set X. Then(X,) is a measurable space. The setAX is -measurable if A.
Measurable Functions https://people.math.gatech.edu/~heil/6337/spring11/section3.1.pdf https://sites.ualberta.ca/~rjia/Math417/Notes/chap5.pdf
Definitions https://www.bauer.uh.edu/rsusmel/phd/sR-0.pdf
Borel Measurable Functions Let(X,p) be a metric space andB(X) be the Borel -algebra on X. A B(X)-measurable functionf:XR is called Borel measurable s.t AB(R):f1(A)B(X).
Sigma Algebra https://mathworld.wolfram.com/Sigma-Algebra.html
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