Level sets of uniform quotient mappings from Rn to R do not need to be locally connected.
We give an example of a uniform quotient map from R2 to R which has non-locally connected level sets.
Link concordance, homology cobordism, and Hirzebruch-type defects from iterated p-covers
Linking pairings on singular spaces.
Links of homeomorphisms of a disk and topological entropy.
L'instanton gordien
L'invariance topologique du type simple d'homotopie
Local moves on knots and products of knots
We show a relation between products of knots, which are generalized from the theory of isolated singularities of complex hypersurfaces, and local moves on knots in all dimensions. We discuss the following problem. Let K be a 1-knot which is obtained from another 1-knot J by a single crossing change (resp. pass-move). For a given knot A, what kind of relation do the products of knots, K ⊗ A and J ⊗ A, have? We characterize these kinds of relation between K ⊗ A and J ⊗ A by using local moves on high...
Local subhomeotopy groups of bounded surfaces.
Localization of Topological Pontryagin Classes via Finite Propagation Speed.
Locally flat 2-spheres in simply connected 4-manifolds.
Locally starlike decompositions of separable metric spaces
Malnormal subgroups and Frobenius groups: basics and examples
Malnormal subgroups occur in various contexts. We review a large number of examples, and compare the general situation to that of finite Frobenius groups of permutations.In a companion paper [18], we analyse when peripheral subgroups of knot groups and -manifold groups are malnormal.
Manifold Approximate Fibrations are Approximately Bundles.
Manifolds with a given homology and fundamental gorup.
Manifolds with a special type of conelike singularities.
Manifolds with non-stable fundamental groups at infinity.
Manifolds with non-stable fundamental groups at infinity, II.
Manifolds with wells of negative curvature (with an Appendix by Daniel Ruberman).
Mapping class group of a handlebody
Let B be a 3-dimensional handlebody of genus g. Let ℳ be the group of the isotopy classes of orientation preserving homeomorphisms of B. We construct a 2-dimensional simplicial complex X, connected and simply-connected, on which ℳ acts by simplicial transformations and has only a finite number of orbits. From this action we derive an explicit finite presentation of ℳ.
Mappings of reducible 3-manifolds