Grothendieck's condition AB5* is used to characterize Baer dualities, i.e,
triples (R, U-R(T), T) consisting of rings R, T and a bimodule U-R(T) faith
ful on both sides such that the lattices of L(R-R) and L(U-T) submodules, a
s well as L(U-R) and L(T-T), are anti-isomorphic. (C) 2000 Academic Press.