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Commentarii Mathematici Helvetici

Commentarii Mathematici Helvetici Volume 62 (1987)
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Front matter _
Front matter _
Table of Contents _
Article: Localization of group rings and applications to 2-complexes. 1
Article: Gaps and bands of one dimensional periodic Schrödinger operators, II. 18
Article: Duale Varietäten von Fahnenvarietäten. 38
Article: Problèmes d'intersections et de points fixes en géométrie hamiltonienne. 62
Article: Le groupe de Witt d'une surface réelle. 74
Article: A lower bound for ... on manifolds with boundary. 106
Article: Length of curves under conformal mappings. 122
Article: A local method in group cohomology. 135
Article: On the non-vanishing of cotangent cohomology. 169
Article: Sur un groupe remarquable de difféomorphisms du cercle. 185
Article: Links of surface singularities and CR space forms. 240
Article: Valuations des espaces homogènes sphériques. 265
Article: On the level of projective spaces. 286
Article: Generalized Weierstrass ...-functions and KP flows in affine spaces. 292
Article: Galois coverings of representation-infinite algebras. 311
Article: On the derived category of a finite-dimensional algebra. 339
Article: Un théorème de densité analytique pour les groupes semisimples. 390
Article: A criterion for a variety to be cone. 417
Article: The cyclic groups and the free loop space. 423
Article: Free Q/Z Actions. 450
Article: SK1 of finite group rings: V. 465
Article: A uniqueness theorem for Zn-periodic variational problems. 511
Article: Sommes de Gauss attachées aux caractères quadratiques: une conjecture de Pierre Conner. 532
Article: New link invariants and applications. 542
Article: Bounded domains with prescribed group of automorphisms. 561
Article: Nonexistence of spatially localized free vibrations for a class of nonlinear wave equations. 573
Article: On simple fibered knots in S5 and the existence of decomposable algebraic 3-knots. 587
Article: Power series with integer coefficients in several variables. 602
Article: Fibrés algébriques sur une surface réelle. 616
Article: Isolated critical points of mappings from R4 to R2 and a natural splitting of the Milnor number of a classical fibered link. Part I: Basic theory; examples. 630
Article: The non-vanishing of the deviations of a local ring. 646
Artikel: Reduction of isolated singularities. 654