فهرست نشریات علمی دسترسی آزاد ایران

A positive solution of the problem of the existence of nontrivial pairs of zero-divisors in group rings of free Burnside groups of sufficiently large odd periods $n>10^{10}$ obtained previously by S‎. ‎V‎. ‎Ivanov and R‎. ‎Mikhailov extended to all odd periods $n\geq665$‎.