Alle Bände

Commentarii Mathematici Helvetici

Commentarii Mathematici Helvetici Volume 65 (1990)
Überschrift Seite
Pages liminaires _
Pages liminaires _
Table des matières _
Article: On the periodic spectrum of the 1-dimensional Schrödinger operator. 1
Article: Normal forms for Hamiltonian systems with Poisson commuting integrals - elliptic case. 4
Article: L2 - Curvature pinching. 36
Article: The Gauss map of a spacelike constant mean curvature hypersurface of Minkowski space. 52
Article: Casson invariant of links of singularities. 58
Article: Mean curvature functions of codimension-one foliations. 79
Article: On the genus of represenattion spheres. 85
Article: On the nodal lines of second eigenfunctions of the fixed membrane problem. 96
Article: Representation of links by braids: A new algorithm. 104
Artikel: A directional compactification of the complex Bloch variety. 114
Artikel: Rigidity for surfaces of non-positive curvature. 150
Artikel: Polynomial algebras over the Steenrod algebra. 171
Artikel: The monodromy of a series of hypersurface singularities. 181
Artikel: Intersection homology Poincaré spaces and the characteristic variety theorem. 198
Artikel: A generalization of Nehari's univalence criterion. 234
Artikel: Amalgamated products and finitely presented groups. 243
Artikel: The maximum principle at infinity for minimal surfaces in flat three manifolds. 255
Artikel: Positive scalar curvature and periodic fundamental groups. 271
Artikel: Multiple fibres of a morphism. 287
Artikel: Some examples of higher rank manifolds of nonnegative curvature. 299
Artikel: Formal groups and L-series. 318
Artikel: Sur les longueurs des géodésiques dùne métrique à courbure négative dans le disque. 334
Artikel: Complex singularities and the framed cobordism class of compact quotients of 3-dimensional Lie groups by discrete subgroups. 349
Artikel: On the algebraic hull of an automorphism group of a principal bundle. 375
Artikel: Locally flat 2-spheres in simply connected 4-manifolds. 388
Artikel: An obstruction for smoothing of Gorenstein surface singularities. 413
Artikel: A calculation of Pin+ Bordism groups. 434
Artikel: A relationship between volume, injectivity radius, and eigenvalues. 448
Artikel: On group homomorphisms including mod-p cohomology isomorphisms. 454
Artikel: About a problem of Ulam concerning flat sections of manifolds. 462
Artikel: Smooth algebras and vanishing of Hochschild homology. 474
Artikel: A priori bounds of Castelnuovo type for cohomological Hilbert functions. 478
Artikel: Geometric actions of surface groups on ...-trees. 519
Artikel: Fixed point free low dimensional real algebraic actions of A5 on contractible varieties. 534
Artikel: Baumslag-Solitar groups and some other groups of cohomological dimension two. 547
Artikel: Witt group of hyperelliptic curves. 559
Artikel: Classes caractéristiques pour les cônes projectifs et homologie d'intersection. 581
Artikel: Small eigenvalues on Y-pieces and on Riemann surfaces. 603
Artikel: Rational category of the space of sections of a nilpotent bundle. 615
Artikel: Une structure symplectique sur R6 avec une sphère lagrangienne plongée et un champ de Liouville complet. 623
Artikel: On small eigenvalues of the Laplacian for ...(q)\... . 664
Artikel: Asymptotically commuting families of operators. 672