Definition
A function between topological spaces and is quasi-open if, for any non-empty open set, the interior of in is non-empty.
Read more about this topic: Quasi-open Map
Famous quotes containing the word definition:
“... we all know the wag’s definition of a philanthropist: a man whose charity increases directly as the square of the distance.”
—George Eliot [Mary Ann (or Marian)
“One definition of man is “an intelligence served by organs.””
—Ralph Waldo Emerson (1803–1882)
“Scientific method is the way to truth, but it affords, even in
principle, no unique definition of truth. Any so-called pragmatic
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—Willard Van Orman Quine (b. 1908)