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regular smooth curve - Penn Math

regular smooth curve - Penn Math

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THEOREM. Given <strong>smooth</strong> functions �(s) > 0<br />

and �(s) , for s � I , there exists a <strong>regular</strong> <strong>curve</strong><br />

�: I � R 3 parametrized by arc length,<br />

with curvature �(s) and torsion �(s) .<br />

Moreover, another other such <strong>curve</strong> �: I � R 3<br />

differs from � by a rigid motion of R 3 .<br />

This result is sometimes called the<br />

fundamental theorem of the local theory of <strong>curve</strong>s.<br />

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