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second countable造句

"second countable"是什么意思   

例句與造句

  1. It is customary to require that the space be second countable.
  2. Let G be a second countable locally compact group.
  3. Let X be a second countable metric space and D a countable dense subset.
  4. Now, let Y be compact metric, we show Y is second countable.
  5. The topological space [ 0, ? 1 ) is sequentially compact but not second countable.
  6. It's difficult to find second countable in a sentence. 用second countable造句挺難的
  7. The special case of invariant measure for second countable locally compact groups had been shown by Haar in 1933.
  8. The first countable bit is what worries me ( obviously not second countable because it is not Lindelof ).
  9. Every first-countable space is sequential, hence each second countable, metric space, and discrete space is sequential.
  10. A "'Polish space "'is a second countable topological space that is metrizable with a complete metric.
  11. It seems to me that I can prove Lindel鰂 and second countable are equivalent for any topological space and here is the proof.
  12. Formally, a "'topological manifold "'is a second countable Hausdorff space that is locally homeomorphic to Euclidean space.
  13. Every compact metric space is second countable, and is a continuous image of the Cantor set . ( The latter result is due to Pavel Alexandrov and Urysohn .)
  14. In 1925, Tibor Rad?proved the theorem that non-compact Riemann surfaces ( i . e ., one-dimensional complex manifolds ) are necessarily second countable.
  15. It coincides with the usual definition if X is second countable or if every compact saturated subset is closed ( which is the case in particular if X is Hausdorff ).
  16. *PM : a compact metric space is second countable, id = 9296 new !-- WP guess : a compact metric space is second countable-- Status:
  17. 更多例句:  下一頁

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