Charge-and-tightness conjecture for the ropelength energies
Charge-and-tightness conjecture for the ropelength energies
Let be a link, let be the scale-invariant energy defined in the paper, and let denote ropelength, with thickness measuring the radius of the largest embedded tube around . An energy is charge and tight when it diverges along sequences approaching a self-intersection or a shrinking knotted arc. Charge-and-tightness conjecture. For , the energy is bounded below by some monotonic function of ropelength, so approaches infinity for any sequence of links with fixed length and thickness approaching zero. This conjecture would establish the stated charge and tight properties for the energies with ; the paper does not provide a resolution.
Sources & referencesView supporting material
Primary source
John M Sullivan, “Approximating Ropelength by Energy Functions”, arXiv:math/0203205 (2002).
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