Homotopy type of automorphism groups of manifolds
Hyperspaces of CW-complexes
It is shown that the hyperspace of a connected CW-complex is an absolute retract for stratifiable spaces, where the hyperspace is the space of non-empty compact (connected) sets with the Vietoris topology.
Ideal triangulations of 3-manifolds II; taut and angle structures.
Ideal triangulations of hyperbolic -manifolds
Quello delle triangolazioni geodetiche ideali è un metodo molto potente per costruire strutture iperboliche complete di volume finito su 3-varietà non compatte, ma non è noto se il metodo sia applicabile in generale. È tuttavia noto che esistono triangolazioni ideali parzialmente piatte, ma l'analisi della situazione diviene più ardua sotto diversi aspetti, quando si ha a che fare con tetraedri piatti oltre che veri tetraedri. In particolare, la topologia dello spazio di identificazione può degenerare,...
Identitäten für Whitehead-Produkte höherer Ordnung.
Index vector-function and minimal cycles.
Inequivalent fibred knots whose homotopy Seifert pairings are isometric.
Inequivalent frame-spun knots with the same complement.
Infinite Matrices in Algebraic K-Theory and Topology
Intersection homology Poincaré spaces and the characteristic variety theorem.
Intersection R-Torsion and Analytic Torsion for Pseudomanifolds.
Intersection Whitehead Torsion and the s-Cobordism Theorem for Pseudomanifolds.
Inverse limits of simplicial complexes
Invertible Knot Cobordisms
k-Invariants of knotted 2-spheres.
Klein Hyperbottle
Knot and braid invariants from contact homology. II.
Knot and link projections in 3-manifolds.
Knot cobordism and amphicheirality.
Knot manifolds with isomorphic spines
We study the relation between the concept of spine and the representation of orientable bordered 3-manifolds by Heegaard diagrams. As a consequence, we show that composing invertible non-amphicheiral knots yields examples of topologically different knot manifolds with isomorphic spines. These results are related to some questions listed in [9], [11] and recover the main theorem of [10] as a corollary. Finally, an application concerning knot manifolds of composite knots with h prime factors completes...