HARD UNKNOTS AND COLLAPSING TANGLES
The following sections are included:
Introduction
The Culprit
Rational Tangles, Rational Knots and Continued Fractions
The Tangle Fraction
Rational Knots and Continued Fractions
The Return of the Culprit
Collapsing to Unknots and Unlinks
Continued Fractions, Convergents and Lots of Unknots
Constructing Hard Unknots
The Smallest Hard Unknots
The Goeritz Unknot
Recalcitrance Revisited
Collapsing to Knots and Links
Stability in Processive DNA Recombination
Afterthoughts - Farey Series, Continued Fractions, Pick's Theorem and Ford Circles
Farey Series and Continued Fractions
Pick's Theorem
Ford Circles
References