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We give a factorization of the cycle of a bounded complex of vector bundles in terms of certain associated differential forms and residue currents. This is a generalization of previous results in the case when the complex is a locally free…

复变函数 · 数学 2022-05-16 Richard Lärkäng , Elizabeth Wulcan

Given a generically surjective holomorphic vector bundle morphism $f\colon E\to Q$, $E$ and $Q$ Hermitian bundles, we construct a current $R^f$ with values in $\Hom(Q,H)$, where $H$ is a certain derived bundle, and with support on the set…

复变函数 · 数学 2007-05-23 Mats Andersson

We show that Coleff-Herrera type products of residue currents can be defined by analytic continuation of natural functions depending on one complex variable.

复变函数 · 数学 2013-03-04 Mats Andersson , Håkan Samuelsson Kalm , Elizabeth Wulcan , Alain Yger

Cohen-Macaulayness, unmixedness, the structure of the canonical module and the stability of the Hilbert function of algebraic residual intersections are studied in this paper. Some conjectures about these properties are established for…

交换代数 · 数学 2016-07-13 S. H. Hassanzadeh , J. Naéliton

Given a finite locally free resolution of a coherent analytic sheaf $\mathcal F$, equipped with Hermitian metrics and connections, we construct an explicit current, obtained as the limit of certain smooth Chern forms of $\mathcal F$, that…

复变函数 · 数学 2025-08-28 Richard Lärkäng , Elizabeth Wulcan

We describe various approaches to Coleff-Herrera products of residue currents $R^j$ (of Cauchy-Fantappi\`e-Leray type) associated to holomorphic mappings $f_j$. More precisely, we study to which extent (exterior) products of natural…

复变函数 · 数学 2013-01-10 Richard Lärkäng , Håkan Samuelsson

We prove a uniqueness result for Coleff-Herrera currents which in particular means that if $f=(f_1,..., f_m)$ defines a complete intersection, then the classical Coleff-Herrera product associated to $f$ is the unique Coleff-Herrera current…

复变函数 · 数学 2007-11-16 Mats Andersson

Let $X$ be a projective manifold. Let $Y_1,...,Y_{p+1}$ be $p+1$ ample hypersurfaces in complete intersection position on $X$, each defined by the global section of an ample Cartier divisor. We show in this note that for $i\le p+1$, the…

代数几何 · 数学 2007-05-23 Bruno Fabre

We develop a theory of residues for arithmetic surfaces, establish the reciprocity law around a point, and use the residue maps to explicitly construct the dualizing sheaf of the surface. These are generalisations of known results for…

数论 · 数学 2011-01-17 Matthew Morrow

We develop a formula (Theorem 5.1) which allows to compute top Chern classes of vector bundles on the vanishing locus $V(s)$ of a section of this bundle. This formula particularly applies in the case when $V(s)$ is the union of locally…

代数几何 · 数学 2007-05-23 Georg Hein

We give a factorization of the fundamental cycle of an analytic space in terms of certain differential forms and residue currents associated with a locally free resolution of its structure sheaf. Our result can be seen as a generalization…

复变函数 · 数学 2018-08-24 Richard Lärkäng , Elizabeth Wulcan

We introduce the notion of a Thom class of a current and define the localized intersection of currents. In particular we consider the situation where we have a smooth map of manifolds and study localized intersections of the source manifold…

复变函数 · 数学 2016-12-09 Cinzia Bisi , Filippo Bracci , Takeshi Izawa , Tatsuo Suwa

If $I$ is a perfect ideal in a local Cohen-Macaulay ring, the generators of ideals linked to $I$ are well understood. However, the generators of the residual intersections of $I$ have only been computed in a few special cases. In this…

交换代数 · 数学 2022-10-28 Yevgeniya Tarasova

This paper studies algebraic residual intersections in rings with Serre's condition \( S_{s} \). It demonstrates that residual intersections admit free approaches i.e. perfect subideal with the same radical. This fact leads to determining a…

交换代数 · 数学 2025-02-13 S. Hamid Hassanzadeh

In this paper, we prove a formula of Grauert-Riemenschneider canonical sheaf and log canonical thresholds for a general residual intersection as well as an equality of minimal log discrepancies under a general link. We also prove an…

代数几何 · 数学 2018-01-12 Shihoko Ishii , Wenbo Niu

We study residue currents of the Bochner--Martinelli type using their relationship with Mellin transforms of residue integrals. We present the structure formula for residue currents associated with monomial mappings: they admit…

复变函数 · 数学 2016-03-23 Irina Antipova

The generation and destruction of the supercurrent in a superconductor (S) between two resistive normal (N) current leads connected to a current source is computed from the source equation for the supercurrent density. This equation relates…

超导电性 · 物理学 2009-11-07 Arne Jacobs , Reiner Kümmel

Let $A\subseteq B$ be a $C^*$-inclusion. We give efficient conditions under which $A$ separates ideals in $B$, and $B$ is purely infinite if every positive element in $A$ is properly infinite in $B$. We specialise to the case when $B$ is a…

算子代数 · 数学 2024-10-29 B. K. Kwaśniewski , R. Meyer

The second Veronese ideal $I_n$ contains a natural complete intersection $J_n$ generated by the principal $2$-minors of a symmetric $(n\times n)$-matrix. We determine subintersections of the primary decomposition of $J_n$ where one…

交换代数 · 数学 2016-08-12 Thomas Kahle , André Wagner

We prove that the $d$-component of the generic initial ideal, with respect to the reverse lexicographic order, of an ideal generated by a regular sequence of homogeneous polynomials of degree $d$ is revlex in a particular, but important,…

交换代数 · 数学 2016-03-29 Mircea Cimpoeas