@MISC{TOPREALC.MIZ,
  AUTHOR = {Korni{\l}owicz, Artur},
  TITLE = {On the Continuity of Some Functions},
  SECTION1 = {Preliminaries},
  SECTION2 = {Continuity},
  DAY = {9},
  MONTH = {February},
  YEAR = {2010},
  ADDRESS1 = {Institute of Informatics\\University of Bia{\l}ystok\\Sosnowa 64, 15-887 Bia{\l}ystok\\Poland},
  SUMMARY = {We prove that basic arithmetic
  operations preserve continuity of functions.}}
