Halbeinfache Automorphismengruppen von vierdimensionalen stabilen Ebenen sind quasi-einfach.
Halves of a real Enriques surface.
Harmonic and Minimal Unit Vector Fields on the Symmetric Spaces and
The exceptional compact symmetric spaces and admit cohomogeneity one isometric actions with two totally geodesic singular orbits. These singular orbits are not reflective submanifolds of the ambient spaces. We prove that the radial unit vector fields associated to these isometric actions are harmonic and minimal.
Higher simple structure sets of lens spaces with the fundamental group of arbitrary order
Extending work of many authors we calculate the higher simple structure sets of lens spaces in the sense of surgery theory with the fundamental group of arbitrary order. As a corollary we also obtain a calculation of the simple structure sets of the products of lens spaces and spheres of dimension grater or equal to .
Holonomy groups of five dimensional Bieberbach groups.
Homeomorphic conjugates of Fuchsian groups.
Homeomorphism Groups and the Topologist's Sine Curve
It is shown that deleting a point from the topologist's sine curve results in a locally compact connected space whose autohomeomorphism group is not a topological group when equipped with the compact-open topology.
Homeomorphism groups of manifolds and Erdős space.
Homeomorphism groups of Sierpiński carpets and Erdős space
Erdős space is the “rational” Hilbert space, that is, the set of vectors in ℓ² with all coordinates rational. Erdős proved that is one-dimensional and homeomorphic to its own square × , which makes it an important example in dimension theory. Dijkstra and van Mill found topological characterizations of . Let , n ∈ ℕ, be the n-dimensional Menger continuum in , also known as the n-dimensional Sierpiński carpet, and let D be a countable dense subset of . We consider the topological group of all...
Homeotopy groups of compact 2-manifolds
Homeotopy groups of orientable 2-manifolds
Homogeneity rank of real representations of compact Lie groups.
Homogeneous cohomology manifolds which are inverse limits
Homogeneous spaces admitting transitive semigroups.
Homological Transfers for Orbit Space Projections.
Homology Spheres and S1-Actions.
Homotopiedarstellungen endlicher Gruppen: Dimensionsfunktionen.
Homotopy 4-Spheres Have Little Symmetry.
Homotopy Classification of Equivariant Regular Sections.
Homotopy Decompositions of Equivariant Function Spaces. II. Function Spaces of Equivariantly Triangulated Spaces.