Definition of Bertrand curve
: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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Bertrand curve
noun
Ber·trand curve
\
ˈber-ˌtränd-
,
ber-ˈträⁿ-
\
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Origin and Etymology of bertrand curve
after Joseph L. F. Bertrand †1900 French mathematician
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