Notes
This is called ambient isotopy in the literature.
The equivalence relation here is ambient isotopy.
The precise notion of equivalence here is again ambient isotopy.
See also a framed knots movie representation available at http://www.youtube.com/watch?v=KxEBhD0C2Pw.
A linking number movie can be viewed at https://www.youtube.com/watch?v=_qOl_5KcANE.
A Seifert surface movie can be viewed at http://www.youtube.com/watch?v=px3Gq_gvvac.
This is a result of Smale’s theorem, which states that every orientation-preserving diffeomorphism of the 2-sphere is smoothly isotopic to the identity map.
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The authors would like to thank managing editor David Kramer and the referee for fruitful comments that improved the paper.
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Elhamdadi, M., Hajij, M. & Istvan, K. Framed Knots. Math Intelligencer 42, 7–22 (2020). https://doi.org/10.1007/s00283-020-09990-0
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DOI: https://doi.org/10.1007/s00283-020-09990-0