Finite Combinations of Baire Numbers

Abstract

Let $\kappa$ be a regular cardinal. Consider the Baire numbers of the spaces $(2^{\theta }{)}_{\kappa }$ (functions from $\theta$ to 2 and the less than $\kappa$ topology) for various $\theta \ge \kappa$. Let l be the number of such different Baire numbers. Models of set theory with l=1 or l=2 are known and it is also known that l is finite. We show here that if $\kappa >\omega$, then l could be any given finite number. We do not know whether the same is true for $\kappa =\omega$.