second axiom of countability


noun Mathematics.


Nearby words

  1. second,
  2. second advent,
  3. second adventist,
  4. second adventists,
  5. second amendment,
  6. second balkan war,
  7. second ballot,
  8. second banana,
  9. second base,
  10. second baseman

axiom of countability

noun Mathematics.

the property satisfied by a topological space in which the neighborhood system of each point has a base consisting of a countable number of neighborhoods (first axiom of countability) or the property satisfied by a topological space that has a base for its topology consisting of a countable number of subsets of the space (second axiom of countability).
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