%0 Journal Article %T Decomposition of semi-continuous functions into the sum of quasi-continuous functions and the oscillation of almost continuous functions (in Ukrainian) %A O. V. Maslyuchenko %J Matematychni Studii %D 2011 %I Lviv Mathematical Society, VNTL Publishers %X We prove that every semi-continuous function on a metrizable space is decompose into sum of two quasi-continuous functions. And then we obtain a new characterization of the oscillation of almost continuous functions. %K We prove that every semi-continuous function on a metrizable space is decompose into sum of two quasi-continuous functions. And then we obtain a new characterization of the oscillation of almost continuous functions. %U http://matstud.org.ua/texts/2011/35_2/205-214.pdf