Isomorphisms of finite cylindric set algebras of characteristic zero.
György Serény · Notre Dame Journal of Formal Logic · 1993
The basic fact of cylindric algebraic model theory according to which any pair of isomorphic finite-dimensional cylindric set algebras of positive characteristic are base-isomorphic (J.D. Monk) can be extended in a natural way to some algebras of characteristic zero.Moreover, no further improvement is possible in any obvious way.