114 citations · 337 across the 39 of their papers we have counts for
Showing 2000Show all
2 papers · 1 filter
math.GT2000
Unknotting tunnels and Seifert surfaces
Martin Scharlemann, Abigail Thompson
Let be a knot with an unknotting tunnel and suppose that is not a 2-bridge knot. There is an invariant , odd, defined for the pa…
math.GT2000★ 64 cited
Heegaard splittings of compact 3-manifolds
Martin Scharlemann
An expository survey article on Heegaard splittings