Exercise 1.2.10: Let A and B be two nonempty bounded sets of nonnegative real numbers. Define the set C:= {ab: a EA,b E B}. Show that C is a bounded set and that sup C = (supA) (sup B) inf C = (inf A) (inf B). and

Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter7: Real And Complex Numbers
Section7.1: The Field Of Real Numbers
Problem 5TFE: Label each of the following statements as either true or false. If a nonempty set contains an upper...
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Exercise 1.2.10: Let A and B be two nonempty bounded sets of nonnegative real numbers. Define the set
C:= {ab: a EA,b E B}. Show that C is a bounded set and that
sup C = (supA) (sup B)
inf C = (inf A) (inf B).
and
Transcribed Image Text:Exercise 1.2.10: Let A and B be two nonempty bounded sets of nonnegative real numbers. Define the set C:= {ab: a EA,b E B}. Show that C is a bounded set and that sup C = (supA) (sup B) inf C = (inf A) (inf B). and
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