  It is a classical result that a function having baire property from a metric
space into a separable metric space is continuous except on a set of first
category. kuratowski asked whether the condition of separability could be
removed. Several attempts to solve this problem were done in the past, the
earliest one is by kunuji based on a theorem of luzin and novikov. Recently,
grzegorek and labuda proved the theorem of kunuji based on a generalization of
an earlier result of kuratowski in second countable topological space. In this
paper, we develop an unification of this generalization of kuratowski result
and its measure theoretic analogue in category bases and utilize the same to
give a generalized version of the theorem of kunuji. A variant of this
unification is also obtained in Marczewski structures.
