Non-slice linear combinations of algebraic knots
We show that the subgroup of the knot concordance group generated by links of isolated complex singularities intersects the subgroup of algebraically slice knots in an infinite rank subgroup.
Nonsmoothable Zp actions on contractible 4-manifolds.
Non-uniqueness of homotopy factorizations into irreducible polyhedra
Normal all pseudo-Anosov subgroups of mapping class groups.
Normal cones in analytic Whitney stratifications
Note on the Casson-Gordon Invariant of a Satellite Knot.
Note on the mappings of complex projective spaces
Note sur un résultat dans l'homologie sectionnelle
Null sequences cellular decompositions of
Observability of control systems for polynomial inputs and genericity
We consider smooth single-input, two-output systems on a compact manifold X. We show that the set of systems that are observable for any polynomial input whose degree is less than or equal to a given bound contains an open and dense subset of the set of smooth systems.
Obstruction Theory in Fiber Spaces.
On 3-Manifolds with Finite Solvable Fundamental Groups.
On 4-fold covering moves.
On 4-manifolds and span-related numbers for cat manifolds.
On 4-manifolds with free fundamental group.
On 4-Manifolds with Singular Torus Actions.
On a class of spaces for which the fixed-point property is characterized by homology groups
On a problem of S. Ulam concerning Cartesian squares of 2-dimensional polyhedra
On a proof of the JSJ theorem.
On a shape characterization of some two-polyhedra