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Polish space

From Encyclopedia of Mathematics
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A separable topologically complete space. Polish spaces form a natural frame of descriptive set theory. The fundamental Polish space $ \mathbf I $ of irrationals is homeomorphic to the Baire space $ \mathbf N ^ {\mathbf N} $( often denoted by $ \omega ^ \omega $ by those logicians who identify $ \mathbf N $ and the first infinite ordinal number $ \omega $).

A Suslin space is a continuous image of a Polish space.

How to Cite This Entry:
Suslin space. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Suslin_space&oldid=51150