Composite ribbon number one knots have two-bridge summands

Composite ribbon number one knots have two-bridge summands
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by Steven A. Bleiler and Mario Eudave Muñoz PDF

Trans. Amer. Math. Soc. 321 (1990), 231-243 Request permission

A composite ribbon knot which can be sliced with a single band move has a two-bridge summand.

References

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