JournalscmhVol. 73, No. 4

Volume 73, No. 4 (1998)

Commentarii Mathematici Helvetici

Comment. Math. Helv. cover

pp. 499–515
$\pi_1$ -injective surfaces in graph manifolds
J. Hyam RubinsteinShicheng Wang
pp. 516–547
Minimal orbits close to periodic frequencies
U. BessiV. Semijopuva
pp. 548–565
S.A.G.B.I. bases for rings of formal modular seminvariants
R. J. Shank
pp. 566–583
Fano contact manifolds and nilpotent orbits
Ting-Yu Lee
pp. 584–602
Stable constant mean curvature hypersurfaces in some Riemannian manifolds
S. Montiel
pp. 603–636
Schubert polynomials and Bott-Samelson varieties
Peter Magyar
pp. 637–676
Cogroups in algebras over an operad are free algebras
Benoit Fresse