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We introduce a Grassmannian structure for a class of quotient Hilbert modules and attack the polydisc version of Arveson-Douglas conjecture associated to distinguished varieties. More interestingly, we obtain an operator-theoretic…

Operator Algebras · Mathematics 2023-04-27 Kunyu Guo , Penghui Wang , Chong Zhao

In this note we establish a vector-valued version of Beurling's Theorem (the Lax-Halmos Theorem) for the polydisc. As an application of the main result, we provide necessary and sufficient conditions for the completion problem in…

Functional Analysis · Mathematics 2013-09-24 Jaydeb Sarkar , Amol Sasane , Brett D. Wick

In this paper we introduce techniques from complex harmonic analysis to prove a weaker version of the Geometric Arveson-Douglas Conjecture for complex analytic subsets that is smooth on the boundary of the unit ball and intersects…

Functional Analysis · Mathematics 2016-01-29 Ronald G. Douglas , Yi Wang

In the present paper, we study the essential normality of quotient modules over the polydisc. It is shown that if the zero variety of homogenous ideal $I$ is a distinguished variety, then its quotient module is $(1,\infty)$-essentially…

Functional Analysis · Mathematics 2015-08-17 Penghui Wang , Chong Zhao

We consider the Arveson-Douglas conjecture on the essential normality of homogeneous submodules corresponding to algebraic subvarieties of the unit ball. We prove that the property of essential normality is preserved by isomorphisms between…

Operator Algebras · Mathematics 2014-05-16 Matthew Kennedy , Orr Shalit

The purpose of this paper is to initiate a new attack on Arveson's resistant conjecture, that all graded submodules of the $d$-shift Hilbert module $H^2$ are essentially normal. We introduce the stable division property for modules (and…

Operator Algebras · Mathematics 2011-04-26 Orr Shalit

In the present paper, we prove that all the quotient modules in $H^2(\mathbb D^2)$, associated to the finitely generated submodules containing a distinguished homogenous polynomial, are essentially normal, which is the first result on the…

Functional Analysis · Mathematics 2024-07-29 Penghui Wang , Chong Zhao , Zeyou Zhu

How to extend Beurling's theorem on the shift invariant subspaces of Hardy class $H^2$ of the unit disk to several complex variables has been an open problem at least since 1964. In this paper, we prove a generalization of Beurling's…

Complex Variables · Mathematics 2021-08-30 Charles W. Neville

We prove the Arveson-Douglas essential normality conjecture for graded Hilbert submodules that consist of functions vanishing on a given homogeneous subvariety of the ball, smooth away from the origin. Our main tool is the theory of…

Functional Analysis · Mathematics 2013-12-25 Miroslav Englis , Joerg Eschmeier

Guo and the second author have shown that the closure $[I]$ in the Drury-Arveson space of a homogeneous principal ideal $I$ in $\mathbb{C}[z_1,...,z_n]$ is essentially normal. In this note, the authors extend this result to the closure of…

Functional Analysis · Mathematics 2011-08-22 Ronald G. Douglas , Kai Wang

In this paper we prove the Gromov--Milman conjecture (the Dvoretzky type theorem) for homogeneous polynomials on $\mathbb R^n$, and improve bounds on the number $n(d,k)$ in the analogous conjecture for odd degrees $d$ (this case is known as…

Metric Geometry · Mathematics 2011-07-06 V. L. Dol'nikov , R. N. Karasev

In this paper, we present a unified approach to problems of tensor product of quotient modules of Hilbert modules over $\mathbb{C}[z]$ and corresponding submodules of reproducing kernel Hilbert modules over $\mathbb{C}[z_1, \ldots, z_n]$…

Functional Analysis · Mathematics 2013-10-21 Arup Chattopadhyay , B. Krishna Das , Jaydeb Sarkar

A procedure resolving a torsion-free coherent sheaf on a nonsingular $N$-dimensional projective algebraic variety into a locally free sheaf on a projective scheme of certain class is proposed. This is a higher-dimensional analog of the…

Algebraic Geometry · Mathematics 2025-09-30 Nadezhda V. Timofeeva

Let A be an abelian fourfold. We prove the Standard Conjecture of Hodge type for A. By combining this result with a theorem of Clozel we deduce that numerical equivalence on A coincides with l-adic homological equivalence on A for…

Algebraic Geometry · Mathematics 2020-09-03 Giuseppe Ancona

Over an arbitrary compact complex space or an arbitrary germ of complex space $X$, we provide fine resolutions of pure Hodge modules with strict supports $IC_X(\mathbb{V})$ via differential forms with locally $L^2$ boundary conditions. When…

Algebraic Geometry · Mathematics 2021-03-09 Junchao Shentu , Chen Zhao

We establish the essential normality of a large new class of homogeneous submodules of the finite rank d-shift Hilbert module. The main idea is a notion of essential decomposability that determines when an arbitrary submodule can be…

Operator Algebras · Mathematics 2015-09-15 Matthew Kennedy

We formulate and study a torsion analogue of the weight-monodromy conjecture for a proper smooth scheme over a non-archimedean local field. We prove it for proper smooth schemes over equal characteristic non-archimedean local fields,…

Number Theory · Mathematics 2020-08-28 Kazuhiro Ito

In this paper, we investigate the solubility of homogeneous polynomial equations. The work of Browning, Le boudec, Sawin [3] shows that almost all homogeneous equations of degree $d\geq 4$ in $d+1$ or more variables satisfy the Hasse…

Number Theory · Mathematics 2025-09-10 Kiseok Yeon

In this article, we prove the Hodge conjecture for a desingularization of the moduli space of rank 2, semi-stable, torsion-free sheaves with fixed odd degree determinant over a very general irreducible nodal curve of genus at least 2. We…

Algebraic Geometry · Mathematics 2022-05-10 Ananyo Dan , Inder Kaur

We prove an index theorem for the quotient module of a monomial ideal. We obtain this result by resolving the monomial ideal by a sequence of Bergman space like essentially normal Hilbert modules.

Operator Algebras · Mathematics 2017-08-22 Ronald G. Douglas , Mohammad Jabbari , Xiang Tang , Guoliang Yu
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