Completeness and reflexivity type properties of B1(X)статья
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Аннотация:For a Tychonoff space X, B1(X) denotes the space of all Baire-one functions on X endowed with the pointwise topology. We prove that the following assertions are equivalent: (1) B1(X) is a (semi-)Montel space, (2) B1(X) is a (semi-)reflexive space, (3) B1(X) is a (quasi-)complete space, (4) B1(X)=ℝX, (5) X is a Qf-space. It is proved that B1(X) is sequentially complete iff B1(X) is locally complete iff X is a CZ-space. In the case when K is a compact space, we show that B1(K) is locally complete iff K is scattered. We thoroughly study the case when X is a separable metrizable space. Numerous distinguished examples are given.