This is the material which I presented at the 60th birthday conference of my good friend José Luis Vicente in Seville in September 2001. It is based on the nine lectures, now called sections, which were given by me at Purdue in Spring 1997. This should provide a good calculational background for the Galois theory of vectorial (= additive) polynomials and their iterates.

Camila da Silva Gonçalo1, Jorge Vas2 and Antonio Carlos Pereira3 1Department of Preventive and Social Medicine. Faculty of Medical Sciences, State University of Campinas–UNICAMP, Campinas, São Paulo 2Pain Treatment Unit (Doña Mercedes Health Centre), Dos Hermanas, Seville 3Department of Community Dentistry Piracicaba Dental School, State University of Campinas–UNICAMP, Piracicaba, São Paulo, 1,...

*Correspondence: [email protected] Departamento de Análisis Matemático, Facultad de Matemáticas, Universidad de Sevilla, Avenida Reina Mercedes, Seville, 41012, Spain Abstract We survey several applications of fixed point theorems in the theory of invariant subspaces. The general idea is that a fixed point theorem applied to a suitable map yields the existence of invariant subspaces for an operator ...

We have developed a mulch sheet made by inflation molding of PLA, Ecoflex((R)) and modified starch, which all have different biodegradabilities. A field test of use as an agricultural mulch sheet for mandarin oranges was carried out over two years. The mechanical properties of the mulch sheet were weakened with time during the field test, but the quality of the mandarin oranges increased, a res...

FABRIZIO SERGIO ,*† IAN NEWTON,‡ LUIGI MARCHESI† and PAOLO PEDRINI† *Department of Applied Biology, Estación Biológica de Doñana, CSIC, Avda. María Luisa s/n, Pabellón del Perú, 41013 Seville, Spain; †Raptor Conservation Research Unit, Trento Museum of Natural Sciences, Via Calepina 14, 38100 Trento, Italy; and ‡Centre for Ecology and Hydrology, Monks Wood, Abbots Ripton, Huntingdon, Cambridges...

Vincenzo Penteriani, Maria del Mar Delgado, Carlos Alonso-Alvarez, and Fabrizio Sergio Department of Conservation Biology, Estación Biológica de Doñana, Consejo Superior de Investigaciones Cientı́ficas, Avda. de Marı́a Luisa s/n., Pabellón del Perú, Apdo 1056, 41013 Seville, Spain and Instituto de Investigación en Recursos Cinegéticos, IREC (CSIC-UCL-JCCM), Ronda de Toledo s/n., 13005, Ciudad Rea...

The seismicity of the southwestern Iberian Peninsula is moderate but large events with long return periods occur (≈ 200 years). This exceeds life various generations, making population unacquainted seismic hazard. On one hand, this results in a low demanding code which increases vulnerability and, therefore, risk. other local emergency services must be properly prepared to face destructive even...