Uniform Continuity: Example of f*g Not Being Uniformly Continuous

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SUMMARY

The discussion centers on the concept of uniform continuity, specifically addressing the scenario where the product of two uniformly continuous functions, f and g, may not be uniformly continuous. A proposed example involves choosing the set X as the real numbers, \(\mathbb{R}\), and defining the function f(x) = x. This example illustrates that when functions are unbounded, their product can fail to maintain uniform continuity, confirming the hypothesis presented in the homework statement.

PREREQUISITES
  • Understanding of uniform continuity in mathematical analysis
  • Familiarity with real-valued functions and their properties
  • Basic knowledge of function products and limits
  • Concept of bounded vs. unbounded functions
NEXT STEPS
  • Explore the definition and properties of uniform continuity in depth
  • Investigate examples of bounded functions and their products
  • Learn about counterexamples in analysis, particularly in uniform continuity
  • Study the implications of uniform continuity in real analysis and its applications
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Mathematics students, educators, and anyone studying real analysis or exploring the properties of continuous functions.

CarmineCortez
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Homework Statement



If f and g are uniformly continuous on X, give an example showing f*g may not be uniformly continuous.



The Attempt at a Solution



i think if the functions are unbounded the product will not uniformly continuous. Is there a specific example of this function..?
 
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Consider some simple examples first!
Choose X = \mathbb{R}, and maybe let f(x) = x, for any x \in \mathbb{R}.
 

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