Informe del relator

Producción del LEL en un Dominio Técnico. Informe de un caso

El presente trabajo se centró en las actividades de la fase de elicitación de requerimientos, utilizándose para la misma una metodología basada en el uso del Léxico Extendido del Lenguaje (LEL) y Escenarios. Se utilizó como caso de estudio el Sistema de Registración y Producción del Instituto de Hemoterapia de la provincia de Buenos Aires. Las experiencias existentes de construcción se desarrol...

Informe Técnico / Technical Report

El informe NERA analizado

This is a review of the article"Government Preferences for Promoting Open-Source Software: A Solution in Search of A Problem"by David Evans and Bernard J. Reddy. This report was paid for by Microsoft and put together at its request. Now Microsoft is using it as part of their lobbying campaign in Europe against governments' promotion of Open Source Software. As expected, this article is strongly...

On One-relator Inverse Monoids and One-relator Groups

It is known that the word problem for one-relator groups and for one-relator monoids of the form Mon〈A ‖ w = 1〉 is decidable. However, the question of decidability of the word problem for general one-relation monoids of the form M = Mon〈A ‖ u = v〉 where u and v are arbitrary (positive) words in A remains open. The present paper is concerned with one-relator inverse monoids with a presentation o...

Automorphisms of One-relator Groups

It is a well-known fact that every group G has a presentation of the form G = F/R, where F is a free group and R the kernel of the natural epimorphism from F onto G. Driven by the desire to obtain a similar presentation of the group of automorphisms Aut(G), we can consider the subgroup Stab(R) ⊆ Aut(F ) of those automorphisms of F that stabilize R, and try to figure out if the natural homomorph...