3 papers
math.GT2000
Knotted Spheres and Graphs in Balls
Hugh Nelson Howards
Given a properly embedded graph Gamma in a ball B and a punctured sphere Sigma properly embedded in B - Gamma, we examine the conditions on Gamma that are necessary to assure that…
math.GT2000
Strongly n-trivial Knots
Hugh Howards, John Luecke
A knot k is called ``strongly (n-1)-trivial.'' if there exists a projection of k, such that one can choose n crossings of the projection with the property that making the crossing…
math.GT1998
Limits Of Incompressible Surfaces
Hugh Nelson Howards
One can embed arbitrarily many disjoint, non-parallel, non-boundary parallel, incompressible surfaces in any three manifold with at least one boundary component of genus two or gre…