DOI: 10.68381/jca08029 ISSN: 0944-6532

The Category Cv D 0 , N -Cmod and MP

Helmut Röhrl

This paper deals with the halfing morphism of

Cv_{D_0, N} C v D 0 , N
-convex modules, where
D_0 D 0
is the semiring of non-negative dyadic rationals, and its use in the explicit construction of the left adjoint to the functor
O_{D_0, N}:D_0\, O D 0 , N : D 0  
-Mod
\longrightarrow Cv_{D_0, N} ⟶ C v D 0 , N
- Cmod that assigns to each
D_0 D 0
-module its canonical
Cv_{D_0, N} C v D 0 , N
-convex module. Furthermore it is shown that
Cv_{D_0, N} C v D 0 , N
-Cmod is isomorphic to the category MP of midpoint algebras