Implicative lattices
An implicative lattice is a structure A = (A,∨,∧, → ) such that
(A,∨,∧) is a distributive lattice, and
→ is an implication:
x → (y∨z) = (x → y)∨(x → z),
x → (y∧z) = (x → y)∧(x → z),
(x∨y) → z = (x → z)∧(y → z), and
(x∧y) → z = (x → z)∨(y → z)
Let A and B be involutive lattices. A morphism from A to B is a function h : A→B that is a homomorphism: h(x∨y) = h(x)∨h(y) and h(x∨y) = h(x)∧h(y) and h(x → y) = h(x) → h(y).
[Nestor G. Martinez, H. A. Priestley, On Priestley spaces of lattice-ordered algebraic structures, Order 15 (1998) 297--323 MRreview]
[Nestor G. Martinez, A simplified duality for implicative lattices and l-groups, Studia Logica 56 (1996) 185--204 MRreview]