Title of article :
On the Osculating Bundles of Curves inPn
Author/Authors :
E. Ballico ، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 1998
Pages :
10
From page :
483
To page :
492
Abstract :
LetXbe a smooth projective curve of genusg,L Picd(X),V H0(X, L),VspanningL. For every integertwith 1 ≤ t ≤ n − 2 dim(V) − 3, letPt(L) be the principal bundle of ordertofLandGt(L) Pt(L) the image of the Taylor expansion mapV OX → Pt(L), i.e., Pieneʹs osculating bundle of ordertofL. If rank(Gt(L)) = t + 1,c deg(Gt(L)) − deg(Pt(L)) is the degree of the cuspidal locus of order ≤ tof the linear system V. Here we studyGt(L) as an abstract bundle onXusing elementary transformations. For everyg ≥ 2 we obtain conditions ong,d,n,t, andcsuch that for allXand allL Picd(X), there isV H0(X, L) such that the associated osculating bundleGt(L) is a general stable bundle of rankt + 1 and degree (t + 1)t(g − 1) + (t + 1)d − c.
Journal title :
Journal of Algebra
Serial Year :
1998
Journal title :
Journal of Algebra
Record number :
694185
Link To Document :
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