The mathematics and computer science seminar of the University of Sidi Bel Abbès will take place on Saturday, May 27th, 2023 at 10:00 am in Room 8 of the Computer Science Department. Program for Saturday, May 27th, 2023: 10:00 am: "On k-balancing and k-cobalancing numbers" by Ali DEBBACHE (USTHB)