Hi, Is there any way or function in R that can find the Connecting Dominating Set? Regards, Amir -- _______________________________________________________ Amir Darehshoorzadeh | Comp. Architecture Dept. PhD Student | UPC-Campus Nord, C6-221 Email: amir at ac.upc.edu | c/ Jordi Girona, 1-3 Tel: | 08034 Barcelona - SPAIN http://personals.ac.upc.edu/amir