Generalized strongly -convex functions of higher order is a new concept convex which introduced by Saleem et al. in 2020. The Schur type inequality for generalized also studied them. This paper aims to revise their paper. In it, we show that the contradiction was true. showed previously not valid and give correct

We obtain new results on the 2-rainbow domination number of generalized Petersen graphs P(ck,k). Exact values are established for all infinite families where general lower bound 45ck is attained. In other cases and upper bounds with small gaps given.