I -- I. Boolean Algebra -- II. Boolean Equations -- III. Linear Pseudo-Boolean Equations and Inequalities -- IV. Nonlinear Pseudo-Boolean Equations and Inequalities -- V. Minimization of Linear Pseudo-Boolean Functions -- VI. Minimization of Nonlinear Pseudo-Boolean Functions -- VII. Extensions...

The central objective of this paper is to develop a transparent, consistent, self-contained, and stable country risk rating model, closely approximating the country risk ratings provided by Standard and Poor's (Samp;P). The models should be non-recursive, i.e., they should not rely on the...