On varieties with higher osculating defect

Pietro De Poi,Roberta Di Gennaro,Giovanna Ilardi

REVISTA MATEMATICA IBEROAMERICANA（2013）

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摘要

In this paper, using the method of moving frames, we generalise some of Terracini's results on varieties with tangent defect. In particular, we characterise varieties with higher order osculating defect in terms of Jacobians of higher fundamental forms and moreover we characterise varieties with "small" higher fundamental forms as contained in scrolls.

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关键词

Algebraic varieties,osculating defects,higher fundamental forms,Laplace equations,scrolls

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