Levelling an unknotting tunnel.
The Subgroup of ...2 Generated by Automorphisms of Tori.
The Fundamental Group of Fibered Knot Cobordisms.
Smooth spheres in IR4 with four critical points are standard.
Transversality Theories at Dimension Four.
Heegaard splittings of (surface) x I are standars.
Tangles, Property P, and a Problem of J. Martin.
Unknotting Number, Genus, and Companion Tori.
Link genus and the Conway moves.
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