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DNA Entanglement, Topoisomerase Action

DNA disentangling by type-2 topoisomerases (with Lynn Zechiedrich)

Electrostatics of DNA-DNA juxtapositions (with Lynn Zechiedrich, Graham Randall, and B. Montgomery Pettitt)

Entanglement Rates

The unified theory of filament entanglement (with Jon Simon)

Four-thirds power law for knots and links

Total curvature and packing of knots (with Jon Simon)

Physical Knots

Role of flexibility in entanglement (with Eric Rawdon)

Energy and length of knots (with Jon Simon)

A simple energy function for knots (with Jeremy Orloff)

Accessibility and occlusion of biopolymers, ray tracing of radiating tubes, and the temperature of a tangle (with Jon Simon, Jeff Schnick, and Rob Scharein)

Celestial Mechanics -- the N-body Problem

Most smooth closed space curves contain approximate solutions of the n-body problem

Clustering in central configurations

Evolution

Adaptive Saddles

Book Reviews

Why not knot right?