%0 Journal Article %T (Metrically) quarter-stratifiable spaces and their applications in the theory of separately continuous functions %A Taras Banakh %J Mathematics %D 2008 %I arXiv %X We introduce and study (metrically) quarter-stratifiable spaces and then apply them to generalize Rudin and Kuratowski-Montgomery theorems about the Baire and Borel complexity of separately continuous functions. %U http://arxiv.org/abs/0810.3024v1