Quadratic sheaves and selflinkage
Abstract
Generalizing an old result proved by P. Rao [see MR 83i:14025] for arithmetically CohenMacaulay, selflinked subschemes of codimension 2 in the projective nspace P, we give a characterization of selflinked pure subschemes of codimension 2 in P satisfying a necessary parity condition, in characteristic different from 2. We make use of the theory of quadratic sheaves described in a previous paper of the authors [see MR 99h:14044].
 Publication:

arXiv Mathematics eprints
 Pub Date:
 June 2001
 arXiv:
 arXiv:math/0106104
 Bibcode:
 2001math......6104C
 Keywords:

 Algebraic Geometry;
 Commutative Algebra;
 14M06;
 14M07;
 13C40
 EPrint:
 AmSppt, 12 pages, no figures