INverse of a function between topological spaces and continuity

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SUMMARY

The discussion centers on proving that if the inverse of a function between topological spaces maps base sets to base sets, then the function is continuous. The standard definition of continuity states that a function f: X → Y is continuous if the inverse image of every open subset of Y is open in X. The conversation highlights confusion regarding the relationship between base sets and open sets, emphasizing the need for clarity in these concepts.

PREREQUISITES
  • Understanding of topological spaces
  • Familiarity with the concept of continuity in mathematics
  • Knowledge of base sets in topology
  • Basic definitions of open sets
NEXT STEPS
  • Study the definition and properties of topological spaces
  • Learn about the relationship between base sets and open sets in topology
  • Explore examples of continuous functions and their inverses
  • Investigate the implications of continuity in various mathematical contexts
USEFUL FOR

Mathematics students, particularly those studying topology, educators teaching continuity concepts, and anyone interested in the foundational aspects of mathematical functions and their properties.

stgermaine
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Homework Statement


Prove that if the inverse of a function between topological spaces maps base sets to base sets, then the function is continuous.


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The Attempt at a Solution


I really don't know how to do this. Wikipedia entry for 'base sets' redirects to Pokemon cards.
 
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Have you tried playing with the Pokemon cards?

Just kidding; the standard def. of continuity , AFAIK, is that f:X-->Y is continuous

iff.(def.) the inverse image of an open subset of Y is open in X. Do you know how

basic sets relate to open sets?
 

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