Automorphisms of surface mapping class groups. A recent theorem of N. Ivanov.
Bernstein Theorems for Harmonic Morphisms from R3 and S3.
Betti numbers and Euler's formula for combinatorial foliations.
Bifurcations and Hamilton's Principle.
Bifurcations de points fixes elliptiques - III. Orbites périodiques de «petites» périodes et élimination résonnante des couples de courbes invariantes
Bi-Legendrian connections
We define the concept of a bi-Legendrian connection associated to a bi-Legendrian structure on an almost -manifold . Among other things, we compute the torsion of this connection and prove that the curvature vanishes along the leaves of the bi-Legendrian structure. Moreover, we prove that if the bi-Legendrian connection is flat, then the bi-Legendrian structure is locally equivalent to the standard structure on .
Bilinear Forms on Manifoids.
Bilipschitz invariance of the first transverse characteristic map
Given a smooth S¹-foliated bundle, A. Connes has shown the existence of an additive morphism ϕ from the K-theory group of the foliation C*-algebra to the scalar field, which factorizes, via the assembly map, the Godbillon-Vey class, which is the first secondary characteristic class, of the classifying space. We prove the invariance of this map under a bilipschitz homeomorphism, extending a previous result for maps of class C¹ by H. Natsume.
Bochner's theorem and minimal foliation. (Théorème de Bochner et feuilletage minimal.)
Bogomolov instability of higher rank sheaves on surfaces in characteristic p.
Bordism and Geometric Dimension.
Bordism of oriented 5-manifolds with T-structure and polarization
Bordism of spin manifolds with local actions of Tori in low dimensions
Bordism with codimension-one singularities
Bordismengruppen unitärer Torusmannigfaltigkeiten.
Bordismentheorie stabil gerahmter G-Mannigfaltigkeiten.
Bordismus verzweigter Überlagerungen von niedrigdimensionalen Sphären.
Bounding automorphism groups.
Bounding Cohomology Groups of Vector Bundles on IPn.