Bertrand curve

noun Ber·trand curve \ˈber-ˌtränd-, ber-ˈträⁿ-\

Definition of Bertrand curve

  1. :  either of two twisted curves having the property that the principal normals to one of them are also principal normals to the other

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Origin and Etymology of bertrand curve

after Joseph L. F. Bertrand †1900 French mathematician

Seen and Heard

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to cast off or become cast off

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