| 11. | In general, isotopy classification of embeddings.
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| 12. | This corresponds to the definition of isotopy.
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| 13. | Two knots are defined to be equivalent if there is an ambient isotopy between them.
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| 14. | The natural notion of equivalence is isotopy.
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| 15. | This neighborhood is unique up to isotopy.
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| 16. | Splittings are considered up to isotopy.
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| 17. | It is weaker than isotopy, and stronger than homotopy : isotopy implies concordance implies homotopy.
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| 18. | It is weaker than isotopy, and stronger than homotopy : isotopy implies concordance implies homotopy.
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| 19. | A phonetic isotopy is the recurrence of phonomenes, like in rhyme, assonance and alliteration.
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| 20. | Two quasigroups are "'isotopic "'if there is an isotopy between them.
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