(1) (a) Define A1 := {A CR : A is open} and A2 := {A CR: A is closed}. Is Aj is a o-algebra? Is Az is a o-algebra? And Aj U A2? And A1 n A2? Justify your answer.
Riemann Sum
Riemann Sums is a special type of approximation of the area under a curve by dividing it into multiple simple shapes like rectangles or trapezoids and is used in integrals when finite sums are involved. Figuring out the area of a curve is complex hence this method makes it simple. Usually, we take the help of different integration methods for this purpose. This is one of the major parts of integral calculus.
Riemann Integral
Bernhard Riemann's integral was the first systematic description of the integral of a function on an interval in the branch of mathematics known as real analysis.
This question related to MEASURE AND
![{ACR : A is closed}. Is A1 is
a o-algebra? Is Az is a o-algebra? And Aj U A2? And A1 n A2? Justify your
(1) (a) Define A1 := {A C R: A is open} and A2 :
answer.
(b) Is the set [0, 1) U (2, 3] a Borel set? Is every Borel set either open or closed?
Justify your answer.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe4175137-c8c6-4270-a74c-8d692bc6240d%2Fbc47b13f-d01f-4b59-be8b-2b4acfe5f167%2F67bgzej_processed.jpeg&w=3840&q=75)
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