This is the gaceta.cls LaTeX class, which is intended to write papers for ``La Gaceta de la Real Sociedad Matem\'atica Espa\~nola'', a journal of the Real Sociedad Matem\'atica Espa\~nola, http://www.rsme.es/ As examples of use of gaceta.cls, we provide two templates: plantilla-articulo-suelto.tex plantilla-articulo-de-seccion.tex (with its corresponding pdf files). La Gaceta of the RSME is written in Spanish, so the templates are also in Spanish. Version: 1.06, 2008/05/14 Changes with respect to version 1.0: - Support for the section ``La Olimiada Matem\'atica'' - Support for abstract with the style of La Gaceta - Added pseudotheorem environment - Added command \provisional - Small bug fixes Author: Juan L. Varona jvarona at unirioja dot es http://www.unirioja.es/cu/jvarona/ License: LaTeX Project Public License (LPPL), any version