Uludag, A. M.2016-02-082016-02-0819980022-247Xhttp://hdl.handle.net/11693/25385We give some sufficient conditions of deterioration of smoothness under the operation of convolution. We show that the convolution of two probability densities which are restrictions to R of entire functions can possess infinite essential supremum on each interval. © 1998 Academic Press.EnglishOn possible deterioration of smoothness under the operation of convolutionArticle10.1006/jmaa.1998.60911096-0813