On a singular variety associated to a polynomial mapping

In the paper "Geometry of polynomial mapping at infinity via intersection homology" the second and third authors associated to a given polynomial mapping F : \C^2 \to \C^2 with nonvanishing jacobian a variety whose homology or intersection homology describes the geometry of singularities at infinity of the mapping. We generalize this result.Comment: 1 figur

Impacts of Internal and External Changing Conditions On French and British Labour Market Segmentation

Drawing on empirical investigations based on national labour force surveys (Enquête Emploi for France, LFS and GHS for The UK) for years 1982-3 and 2001, the aim of this paper is to expose relationships between new external and internal conditions faced by organisations and permanencies and transformations of the macro structure of these two labour markets. We used multiple correspondence analysis (MCA) and hierarchical classification algorithm to constitute the typology of segments structuring labour market. The evidence suggests that the dualistic opposition between a primary and a secondary sector on labour market is still relevant. But in the same time, we go from three segments architecture to a fourfold division on labour market, both in France and the UK, with the apparition of a “Labour Insecurity” class.Labour market segmentation; Dualism; Employment relations

Absence of generalised employment instability in the French and British labour markets

This paper aims to enlighten the debate around the increase of instability in contemporary labour markets. Based on the case of France and the UK, we analyse the position in the national employment system of employees, from 30 to 55 years old, concerning their job stability. National employment systems are broken down into four stability regimes created from the stability variable we generate. This variable is calculated on the basis of the ratio of tenure in current job to total time spent in the labour market. Both descriptive statistics of the stability variable and probabilities for employees to joint one regime or another, show the absence of a generalised employment instability for this “central” work force.France; United-Kingdom; Employment system; Job stability;