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sequential space造句

例句與造句

  1. This ordinal invariant is well-defined for sequential spaces.
  2. Clearly, every Fr閏het Urysohn space is a sequential space.
  3. A space is a Fr閏het Urysohn space if and only if every subspace is a sequential space.
  4. Since they are closed under topological sums and quotients, the sequential spaces form a coreflective subcategory of the category of topological spaces.
  5. The final equivalent condition shows that the class of sequential spaces consists precisely of those spaces whose topological structure is determined by convergent sequences in the space.
  6. It's difficult to find sequential space in a sentence. 用sequential space造句挺難的
  7. There are sequential spaces that are not first countable . ( One example is to take the real line "'R "'and identify the set "'Z "'of integers to a point .)
  8. For non first-countable spaces, sequential continuity might be strictly weaker than continuity . ( The spaces for which the two properties are equivalent are called sequential spaces . ) This motivates the consideration of nets instead of sequences in general topological spaces.

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