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A Guide to Public Debt Equations

This document is a practical guide to the main equations describing and related to Public Debt. We derive all the equations presented and highlight their mathematical meaning. An application of these equations is in Cafiso (2012) for some EU countries.This is the 3rd version of this document (November 2012). The main novelty with respect to the previuos version (January 2012) is the introduction of section 3 which considers the case of foreign-currency denominated debt.