Local Divergence Intensity as a Knot Discriminator: Empirical Results on 259 Knots with Zero False Collisions

We present empirical results demonstrating that Local Divergence Intensity (LDI), com-puted from discretized curvature and torsion sequences of space curves, successfully discrim-inates 259 distinct knot types with zero collisions between topologically distinct knots. Thetest library spans torus knots, Lissajous knots, twist knots, and standard tabulated knotswith crossing numbers from 3 to 100. The minimum distance observed between distinctknot types was 8.12 × 10−4 , occurring between two Lissajous knots L(3,5,16) and L(4,5,17).These results substantially exceed the discrimination capacity of classical polynomial in-variants, which exhibit their first collisions at 6–11 crossings. We describe the digitizationmethodology in detail, enabling reproducibility.

Publication Details

Journal
Zenodo (CERN European Organization for Nuclear Research)
Published
2025-11-25
DOI
https://doi.org/10.5281/zenodo.17717034
Primary Topic
Geometric and Algebraic Topology
Type
article
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article

Local Divergence Intensity as a Knot Discriminator: Empirical Results on 259 Knots with Zero False Collisions

Zenodo (CERN European Organization for Nuclear Research)
Geometric and Algebraic Topology
article

Local Divergence Intensity as a Knot Discriminator: Empirical Results on 259 Knots with Zero False Collisions

article en

Abstract

We present empirical results demonstrating that Local Divergence Intensity (LDI), com-puted from discretized curvature and torsion sequences of space curves, successfully discrim-inates 259 distinct knot types with zero collisions between topologically distinct knots. Thetest library spans torus knots, Lissajous knots, twist knots, and standard tabulated knotswith crossing numbers from 3 to 100. The minimum distance observed between distinctknot types was 8.12 × 10−4 , occurring between two Lissajous knots L(3,5,16) and L(4,5,17).These results substantially exceed the discrimination capacity of classical polynomial in-variants, which exhibit their first collisions at 6–11 crossings. We describe the digitizationmethodology in detail, enabling reproducibility.

Zenodo (CERN European Organization for Nuclear Research)
Reduced inequalities
Openalex Percentile: Top 30%
Geometric and Algebraic Topology
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