Applications of epigroups to graded ring theory.
Radicals of semigroup rings of commutative semigroups.
Structure of radicals in bands of semigroups.
On regular semigroup rings.
On the weak permutation property.
On semigroup graded PI-algebras.
A simple matrix semigroup which is not completely simple.
Hereditary radicals and 0-bands of semigroups.
Minimum distances of error-correcting codes in incidence rings.
Varieties and sums of rings.
On the Jacobson radical of graded rings.
On the nilpotency of the Jacobson radical of semigroup rings.
Radicals commuting with bands of semigroups.
On finite principal ideal rings.
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