On the Self-Equivalences of a Space with Non-cyclic Fundamental Group.
On the shape of Bers-Maskit slices.
On the Signature of a Link.
On the Signatures of Torus Knots
We study properties of the signature function of the torus knot . First we provide a very elementary proof of the formula for the integral of the signature over the circle. We also obtain a closed formula for the Tristram-Levine signature of a torus knot in terms of Dedekind sums.
On the simple connectivity at infinity of groups
We study the simple connectivity at infinity of groups of finite presentation, and we give a geometric proof of its invariance under quasi-isometry in a special case.
On the simultaneous embedding of uncountably many distinct wild arcs with one wild endpoint in , a geometric approach
On the Slice Genus of Knots.
On the slice genus of links.
On the Space of the Linear Homeomorphisms of a Polyhedral TV-Cell with Two Interior Vertices*.
On the stable equivalence of open books in three-manifolds.
On the structure of closed 3-manifolds
We will show that for every irreducible closed 3-manifold M, other than the real projective space P³, there exists a piecewise linear map f: S → M where S is a non-orientable closed 2-manifold of Euler characteristic χ ≡ 2 (mod 3) such that for all x ∈ M, the closure of the set is a cubic graph G such that consists of 1/3(2-χ) + 2 simply connected regions, M - f(S) consists of two disjoint open 3-cells such that f(S) is the boundary of each of them, and f has some additional interesting properties....
On the structure of some irrotational vector fields.
On the structure of the centralizer of a braid
On the Structures of Positively Curved Manifolds with Certain Diameter.
On the Weak Covering Homotopy Property.
On transverse foliations
On universal groups and three-manifolds.
On unknotting operations of two-brigde knots.
On unkotting tunnels for knots.
On Yetter's invariant and an extension of the Dijkgraaf-Witten invariant to categorical groups.