Continuous Functions, Vector Spaces

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SUMMARY

The set of all continuous functions defined on the interval (a,b) of the real line is indeed a vector space. This conclusion is based on the property that the sum of any two continuous functions, f and g, remains continuous. While Fourier analysis introduces the concept of discontinuous functions through infinite series of continuous functions, these infinite sums do not fall within the standard definition of a vector space, which requires closure under finite linear combinations.

PREREQUISITES
  • Understanding of vector space properties
  • Knowledge of continuous functions in real analysis
  • Familiarity with finite linear combinations
  • Basic concepts of Fourier analysis
NEXT STEPS
  • Study the properties of vector spaces in linear algebra
  • Explore the definition and examples of continuous functions
  • Learn about finite linear combinations and their implications
  • Investigate the role of infinite series in Fourier analysis
USEFUL FOR

Students of mathematics, particularly those studying real analysis and linear algebra, as well as educators looking to clarify the properties of vector spaces and continuous functions.

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Homework Statement


Is the set of all continuous functions (defined on say, the interval (a,b) of the real line) a vector space?


Homework Equations


None.


The Attempt at a Solution


I'm inclined to say "yes", since if I have two continuous functions, say, f and g, then their sum f+g is also continuous.

But as per Fourier analysis, one can "arrive" at discontinuous functions by taking an infinite series of continuous functions.

Soo.. I'm not 100% certain.
 
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I believe it is.
I don't think infinite sums are "allowed" in the definition; if they were then there would be convergence issues and certain things that ought to be vector spaces would not be.

I believe the definition require the sum of a finite linear combination to be in the vector space.
 

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