A well-known theorem of
Hopkins and Levitzki states that any left artinian ring with identity element is left
noetherian. The main theorem of this paper generalizes this to the situation of a
hereditary torsion theory with associated idempotent kernel functor σ. It is shown
that if a ring R with identity element has the descending chain condition on
σ-closed left ideals, then R has the ascending chain condition on σ-closed left
ideals.