second countable造句
例句與造句
- It is customary to require that the space be second countable.
- Let G be a second countable locally compact group.
- Let X be a second countable metric space and D a countable dense subset.
- Now, let Y be compact metric, we show Y is second countable.
- The topological space [ 0, ? 1 ) is sequentially compact but not second countable.
- It's difficult to find second countable in a sentence. 用second countable造句挺難的
- The special case of invariant measure for second countable locally compact groups had been shown by Haar in 1933.
- The first countable bit is what worries me ( obviously not second countable because it is not Lindelof ).
- Every first-countable space is sequential, hence each second countable, metric space, and discrete space is sequential.
- A "'Polish space "'is a second countable topological space that is metrizable with a complete metric.
- It seems to me that I can prove Lindel鰂 and second countable are equivalent for any topological space and here is the proof.
- Formally, a "'topological manifold "'is a second countable Hausdorff space that is locally homeomorphic to Euclidean space.
- 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 .)
- In 1925, Tibor Rad?proved the theorem that non-compact Riemann surfaces ( i . e ., one-dimensional complex manifolds ) are necessarily second countable.
- 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 ).
- *PM : a compact metric space is second countable, id = 9296 new !-- WP guess : a compact metric space is second countable-- Status:
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