sequential space造句
例句與造句
- This ordinal invariant is well-defined for sequential spaces.
- Clearly, every Fr閏het Urysohn space is a sequential space.
- A space is a Fr閏het Urysohn space if and only if every subspace is a sequential space.
- Since they are closed under topological sums and quotients, the sequential spaces form a coreflective subcategory of the category of topological spaces.
- 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.
- It's difficult to find sequential space in a sentence. 用sequential space造句挺難的
- 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 .)
- 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.