A. Tamariz-Mascarua Independent Families and Resolvability
Joint work with S. Garcia-Ferreira and M. Hrusak
Let $\tau$ and $\gamma$ be infinite cardinal numbers with $\tau \leq \gamma$. A
subset $Y$ of a space $X$ is called $C_\tau$-compact if $f[Y]$ is compact for
every continuous function
$f : X \to \R^\tau$. We prove that
every
$C_\tau$-compact dense subspace of a product of $\gamma$ non-trivial
compact spaces each of them of weight $\leq \tau$ is $2^\tau$-resolvable. In
particular, every
pseudocompact dense subspace of a product of non-trivial
metrizable compact spaces
is $\frak{c}$-resolvable. As a consequence of this
fact we obtain that there is no $\sigma$-independent maximal independent family.
Also, we present a consistent example, relative to the existence of a
measurable cardinal,
of a dense pseudocompact subspace of
$\{0,1\}^{2^\lambda}$, with
$\lambda = 2^{\omega_1}$, which is not maximally
resolvable. Moreover, we improve
a result by W. Hu \cite{wahu} by showing
that if maximal $\theta$-independent families do not exist, then
every dense
subset of $\Box_{\theta}\{0,1\}^\gamma$ is $\omega$-resolvable
for a regular
cardinal number $\theta$ with $\omega_1 \leq \theta \leq \gamma$. Finally, if
there are no maximal independent
families on $\kappa$ of cardinality
$\gamma$, then every Baire dense subset of $\{0,1\}^\gamma$of cardinality $\leq
\kappa$ and every Baire dense subset of $[0,1]^\gamma$ of cardinality $\leq
\kappa$ are $\omega$-resolvable.