Is Uniform Continuity a Property of Bounded Functions?

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SUMMARY

If a function f: (0,1) → ℝ is uniformly continuous, then it is necessarily bounded. This conclusion stems from the properties of uniform continuity, which ensures that for every ε > 0, there exists a δ > 0 such that for all x, y in (0,1), if |x - y| < δ, then |f(x) - f(y)| < ε. The Weierstrass Theorem can be applied to reinforce this argument, as it states that a continuous function on a closed interval is bounded. Thus, uniform continuity implies boundedness in this context.

PREREQUISITES
  • Understanding of uniform continuity and its definition
  • Familiarity with the Weierstrass Theorem
  • Basic knowledge of epsilon-delta arguments
  • Concept of bounded functions in real analysis
NEXT STEPS
  • Study the formal definition of uniform continuity in detail
  • Explore the Weierstrass Theorem and its implications for continuous functions
  • Practice epsilon-delta proofs to solidify understanding of continuity concepts
  • Investigate examples of uniformly continuous functions and their boundedness
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Students of real analysis, mathematicians exploring continuity properties, and educators teaching concepts related to bounded functions and uniform continuity.

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Homework Statement


Show that if a function f:(0,1) --> lR is uniformly continuous, f is bounded.


Homework Equations


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The Attempt at a Solution



Really don´t know. I started thinking about Weierstrass Thereom but I am not sure that it´s ok. Now I think that may be is something about the properties of uniform continuities. Any help would be great.

Thanks in advance.
 
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This is an easy epsilon-delta argument. Work with the definition of uniform continuity. (It's always helpful to draw a picture.)
 

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