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It is well-known that for any non-constant polynomial $P$ with integer coefficients the sequence $(P(n))_{ n\in \mathbb N}$ has the property that there are infinitely many prime numbers dividing at least one term of this sequence.…

Number Theory · Mathematics 2016-02-08 Tigran Hakobyan

The obstruction space T^2 and the cup product T^1 x T^1 -> T^2 are computed for toric singularities.

alg-geom · Mathematics 2008-02-03 Klaus Altmann

This article presents a new proof of a theorem concerning bounds of the spectrum of the product of unitary operators and a generalization for differentiable curves of this theorem. The proofs involve metric geometric arguments in the group…

Functional Analysis · Mathematics 2023-11-03 Martin Miglioli

The class of spaces such that their product with every Lindel\"of space is Lindel\"of is not well-understood. We prove a number of new results concerning such productively Lindel\"of spaces with some extra property, mainly assuming the…

General Topology · Mathematics 2011-04-12 Franklin D. Tall , Boaz Tsaban

We find an explicit general formula for the iterated local monodromy of singularities of the Hadamard product of functions with integrable singularities. The formula implies the invariance by Hadamard product of the class of functions with…

Complex Variables · Mathematics 2020-11-23 Ricardo Pérez-Marco

We introduce a new tool to study the spectral type of rank one transformations using the method of central limit theorem for trigonometric sums. We get some new applications.

Dynamical Systems · Mathematics 2007-05-23 El Houcein El Abdalaoui

We establish a general uniqueness theorem for subharmonic functions of several variables on a domain. A corollary from this uniqueness theorem for holomorphic functions is formulated in terms of the zero subset of holomorphic functions and…

Complex Variables · Mathematics 2016-06-14 Bulat Khabibullin , Nargiza Tamindarova

We prove some probabilistic estimates for tensor products of random vectors. As an application we obtain embeddings of certain matrix spaces into $L_1$.

Functional Analysis · Mathematics 2015-06-11 David Alonso-Gutierrez , Markus Passenbrunner , Joscha Prochno

Let $X$ be a space of homogeneous type and let $L$ be a sectorial operator with bounded holomorphic functional calculus on $L^2(X)$. We assume that the semigroup $\{e^{-tL}\}_{t>0}$ satisfies Davies-Gaffney estimates. Associated to $L$ are…

Functional Analysis · Mathematics 2011-07-22 Dorothee Frey , Peer Christian Kunstmann

We generalize the author's formula for Gromov-Witten invariants of symplectic toric manifolds (see math.AG/0006156) to those needed to compute the quantum product of more than two classes directly, i.e. involving the pull-back of the…

Symplectic Geometry · Mathematics 2007-05-23 Holger Spielberg

We obtain a two weight local Tb theorem for any elliptic and gradient elliptic fractional singular integral operator T on the real line, and any pair of locally finite positive Borel measures on the line. This includes the Hilbert transform…

Classical Analysis and ODEs · Mathematics 2019-06-24 Eric T. Sawyer , Chun-Yen Shen , Ignacio Uriarte-Tuero

We prove a new dyadic representation theorem with applications to the $T(1)$ and $A_2$ theorems. In particular, we obtain the non-homogeneous $T(1)$ theorem under weaker kernel regularity than the earlier approaches.

Functional Analysis · Mathematics 2016-12-16 Ana Grau de la Herrán , Tuomas Hytönen

Two results on product of compact filters are shown to be the common principle behind a surprisingly large number of theorems.

General Topology · Mathematics 2010-02-17 F. Mynard

We prove that singularities with holomorphic monodromies are preserved by the Hadamard product. We find an explicit formula for the monodromy of the singularities, and similar formulas for the exponential e\~ne product. Using these formulas…

Complex Variables · Mathematics 2025-02-10 Ricardo Pérez-Marco

We characterize in terms of inequalities the possible generalized singular numbers of a product AB of operators A and B having given generalized singular numbers, in an arbitrary finite von Neumann algebra. We also solve the analogous…

Operator Algebras · Mathematics 2016-01-26 Hari Bercovici , Benoit Collins , Ken Dykema , Wing Suet Li

We prove a uniqueness theorem for an entire function, which shares certain values with its higher order derivatives.

Complex Variables · Mathematics 2014-05-02 Indrajit Lahiri , Rajib Mukherjee

This work concerns the construction and characterization of product kernels for multivariate approximation from a finite set of discrete samples. To this end, we consider composing different component kernels, each acting on a…

Numerical Analysis · Mathematics 2024-11-27 Kristof Albrecht , Juliane Entzian , Armin Iske

We prove a factorization theorem of generalized functions for moduli spaces of semistable parabolic bundles of any rank.

Algebraic Geometry · Mathematics 2007-05-23 Xiaotao Sun

This paper extends the characterization of compactness established in \cite{cao2024} to bilinear singular integral operators with mild kernel regularity. The exponent we obtain coincides with the best known sufficient condition for the…

Classical Analysis and ODEs · Mathematics 2026-04-30 Jinsong Li

Let X be a smooth real algebraic variety. Let $\xi$ be a distribution on it. One can define the singular support of $\xi$ to be the singular support of the $D_X$-module generated by $\xi$ (some times it is also called the characteristic…

Representation Theory · Mathematics 2008-11-18 Avraham Aizenbud