Proportionality principle for cusped manifolds
We give a short proof of the proportionality principle for cusped hyperbolic manifolds.
Propriétés de Lefschetz dans la cohomologie de certaines variétés arithmétiques : le cas des surfaces modulaires de Hilbert
Pruning theory and Thurston's classification of surface homeomorphisms
Two dynamical deformation theories are presented – one for surface homeomorphisms, called pruning, and another for graph endomorphisms, called kneading – both giving conditions under which all of the dynamics in an open set can be destroyed, while leaving the dynamics unchanged elsewhere. The theories are related to each other and to Thurston’s classification of surface homeomorphisms up to isotopy.
Pseudo-differential operators on V-manifolds and foliations (II).
This paper is a continuation of Part I of the same title which has appeared at the last issue of this journal.
Pseudofree Actions and Hurwitz's 84(g-l) Theorem.
Pseudofree Actions and the Greedy Algorithm.
Pseudo-interiors of hyperspaces
Pseudo-isotopies de plongements en codimension 2
Pseudo-Isotopies of S3 x S1.
Pseudomorphisms of automata
Publier sous l’occupation I. Autour du cas de Jacques Feldbau et de l’Académie des sciences
C’est un article sur les publications mathématiques pendant l’Occupation (1940–44). À travers les cas de quatre mathématiciens, et surtout de celui de Jacques Feldbau (un des fondateurs de la théorie des fibrés, mort en déportation), nous étudions la façon dont la censure a frappé les mathématiciens français définis comme juifs par le « Statut des juifs » d’octobre 1940 et les stratégies de publication que ceux-ci ont alors utilisées (pseudonymes, plis cachetés, journaux provinciaux...) La manière...
Pulling back fixed points.
Pure virtual braids homotopic to the identity braid
Two virtual link diagrams are homotopic if one may be transformed into the other by a sequence of virtual Reidemeister moves, classical Reidemeister moves, and self crossing changes. We recall the pure virtual braid group. We then describe the set of pure virtual braids that are homotopic to the identity braid.
Purely infinite C*-algebras from boundary actions of discrete groups.