A Lefschetz trace formula for equivariant cohomology
A Localization Theorem for Functional S1-Spaces.
A Shapiro lemma for diagrams of spaces with applications to equivariant topology
Actions of Compact Lie Groups on Homogeneous Spaces.
Adams and Steenrod operators in dihedral homology.
An example of an asymptotically Chow unstable manifold with constant scalar curvature
Donaldson proved that if a polarized manifold has constant scalar curvature Kähler metrics in and its automorphism group is discrete, is asymptotically Chow stable. In this paper, we shall show an example which implies that the above result does not hold in the case where is not discrete.
Application de la suite spectrale d’Hodgkin au calcul de la -théorie des variétés de Stiefel
Äquivariante 2-Felder auf Mannigfaltigkeiten mit Involution.
Bivariant cohomology and -spaces
Caractérisation des opérations d'algèbres sur les modules différentiels
Classe de Segre et multiplicité équivariantes
Cohomologie et K-théorie équivariantes des variétés de Bott-Samelson et des variétés de drapeaux
L’objet de cet article est de calculer la cohomologie et la K-théorie équivariantes des variétés de Bott-Samelson (théorèmes 3.3 et 4.3) et d’en déduire des résultats sur les variétés de drapeaux des groupes de Kac-Moody. Dans la section 3, on retrouve la formule de restriction aux points fixes de la base de (théorème 3.9) prouvée par Sara Billey dans [4]. Dans la section 4, on donne l’expression explicite de la restriction aux points fixes de la base de définie par Kostant et Kumar dans...
Complex cobordism of involutions.
Componentwise injective models of functors to DGAs
The aim of this paper is to present a starting point for proving existence of injective minimal models (cf. [8]) for some systems of complete differential graded algebras.
Conjugation spaces.
Cyclic homology and de Rham cohomology.
Cyclic homology and equivariant theories
In this article, we present two possible extensions of the classical theory of equivariant cohomology. The first, due to P. Baum, R. MacPherson and the author, is called the “delocalized theory". We attempt to present it in very concrete form for a circle action on a smooth manifold. The second is the cyclic homology of the crossed- product algebra of the algebra of smooth functions on a manifold, by the convolution algebra of smooth functions on a Lie group, when such Lie group act on the manifold....
Describing toric varieties and their equivariant cohomology
Topologically, compact toric varieties can be constructed as identification spaces: they are quotients of the product of a compact torus and the order complex of the fan. We give a detailed proof of this fact, extend it to the non-compact case and draw several, mostly cohomological conclusions. In particular, we show that the equivariant integral cohomology of a toric variety can be described in terms of piecewise polynomials on the fan if the ordinary integral cohomology is concentrated in even...
Effective homology for homotopy colimit and cofibrant replacement
We extend the notion of simplicial set with effective homology presented in [22] to diagrams of simplicial sets. Further, for a given finite diagram of simplicial sets such that each simplicial set has effective homology, we present an algorithm computing the homotopy colimit as a simplicial set with effective homology. We also give an algorithm computing the cofibrant replacement of as a diagram with effective homology. This is applied to computing of equivariant cohomology operations....
Equivariant Alexander-Spanier cohomology.