VASILE POSTOLICÄ‚ Department of Mathematics and Informatics
Faculty of Sciences, "Vasile Alecsandri" University of Bacău,
157 Calea Mărăşeşti, 600115 Bacău, ROMANIA,
e-mail: vpostolica@ambra.ro
Following the multiple possibilities to approximate any set function using proper sequenc-es of countable additive set - functions and our main conclusions given in some previous research works concerning the best approximation, we present the adequate splines for the countable additive set - functions. This work is a sequel by completion of the most im-portant results contained in the corresponding references.