Un urbis encomium a lo vulgar: el caso de los dictados tópicos

Analysis of popular topics taught in the light of the topics learned poetry, revolving around the urbis encomium, understanding the popular verses somehow respond to a similar structure to that established for the praise of copyright poetry. The popular songs are close to the issue which are specific to them, collected by imitation or by spontaneous coincidence and adopt many of the tools of author's lyric poetry. Within this framework, we go deeply into analogies we found when studying the group of songs we label " songs to the earth" with the topics of classical rhetoric making up the urbis encomium, the praise for the city.

Algebro-Geometric Aspects of the Classical Yang-Baxter Equation

In this thesis we consider algebro-geometric aspects of the Classical Yang-Baxter Equation and the Generalised Classical Yang-Baxter Equation. In chapter one we present a method to construct solutions of the Generalised Classical Yang-Baxter Equation starting with certain sheaves of Lie algebras on algebraic curves. Furthermore we discuss a criterion to check unitarity of such solutions. In chapter two we consider the special class of solutions coming from sheaves of traceless endomorphisms of simple vector bundles on the nodal cubic curve. These solutions are quasi-trigonometric and we describe how they fit into the classification scheme of such solutions. Moreover, we describe a concrete formula for these solutions. In the third and final chapter we show that any unitary, rational solution of the Classical Yang-Baxter Equation can be obtained via the method of chapter one applied to a sheaf of Lie algebras on the cuspidal cubic curve.