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Coleff-Herrera currents, duality, and Noetherian operators

Mats Andersson (Institutionen för matematiska vetenskaper, matematik)
Bulletin De La Societe Mathematique De France (0037-9484). Vol. 139 (2011), 4, p. 535-554.
[Artikel, refereegranskad vetenskaplig]

Let I be a coherent subsheaf of a locally free sheaf O(E-0) and suppose that I = O(E-0)/I has pure codimension. Starting with a residue current R obtained from a locally free resolution of I we construct a. vector-valued Coleff-Herrera current it with support on the variety associated to I such that phi is in I if and only if mu phi = 0. Such a current mu can also be derived algebraically from a fundamental theorem of Roos about the bidualizing functor, and the relation between these two approaches is discussed. By a construction due to Bjork one gets Noetherian operators for I from the current mu. The current R also provides an explicit realization of the Dickenstein-Sessa decomposition and other related canonical isomorphisms.

Nyckelord: Coleff-Herrera current, duality, Noetherian operators, residue current, residue currents, ideals

Denna post skapades 2012-05-16. Senast ändrad 2016-01-12.
CPL Pubid: 157690


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