  A number of research articles have established the significant role of
lattice-ordered groups (l-groups) in logic. The purpose of the present article
is to lay the groundwork for, and provide significant initial contributions to,
the development of a Conrad type approach to the study of algebras of logic.
The term Conrad Program refers to Paul Conrad's approach to the study of
l-groups, which analyzes the structure of individual l-groups or classes of
l-groups by primarily using strictly lattice theoretic properties of their
lattices of convex l-subgroups. The present article demonstrates that large
parts of the Conrad Program can be profitably extended in the setting of
e-cyclic residuated lattices. An indirect benefit of this work is the
introduction of new tools and techniques in the study of algebras of logic, and
the enhanced role of the lattice of convex subalgebras of a residuated lattice.
