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Using a new type of Jacobi field estimate we will prove a duality theorem for singular Riemannian foliations in complete manifolds of nonnegative sectional curvature.

Differential Geometry · Mathematics 2007-05-23 Burkhard Wilking

We prove a noncommutative Bader-Shalom factor theorem for lattices with dense projections in product groups. As an application of this result and our previous works, we obtain a noncommutative Margulis factor theorem for all irreducible…

Operator Algebras · Mathematics 2025-07-17 Rémi Boutonnet , Cyril Houdayer

Almost uniform version of noncommutative Wiener-Wintner ergodic theorem and its extension to Besicovitch weights are proved.

Functional Analysis · Mathematics 2020-12-03 Vladimir Chilin , Semyon Litvinov

We discuss an alternative version of non- relativistic Newtonian mechanics in terms of a real Hilbert space mathematical framework. It is demonstrated that the physics of this scheme correspondent with the standard formulation.…

Quantum Physics · Physics 2007-05-23 Daniel Sepunaru

In order to overcome ambiguity problem on identification of mathematical objects in noncommutative theory with physical observables, quantum mechanical system coupled to the NC U(1) gauge field in the noncommutative space is reformulated by…

High Energy Physics - Theory · Physics 2009-11-10 Akira Kokado , Takashi Okamura , Takesi Saito

In this paper, we introduce a non-commutative space of stochastic distributions, which contains the non-commutative white noise space, and forms, together with a natural multiplication, a topological algebra. A special inequality which…

Functional Analysis · Mathematics 2013-02-25 Daniel Alpay , Guy Salomon

In a previous paper (arXiv:1410.5207) certain birational transformations were constructed between the noncommutative schemes associated to quadratic and cubic three dimensional Sklyanin algebras. In the current paper we consider the inverse…

Algebraic Geometry · Mathematics 2016-07-29 Dennis Presotto

We review some applications of noncommutative geometry to the study of transverse geometry of Riemannian foliations and discuss open problems.

Differential Geometry · Mathematics 2007-05-23 Yuri Kordyukov

We fully characterize those von Neumann algebras having the ball-covering property. We also study the ball-covering property of noncommutative symmetric spaces. In particular, we provide a number of new examples of non-separable…

Operator Algebras · Mathematics 2023-11-27 Jinghao Huang , Karimbergen Kudaybergenov , Rui Liu

We present a relativistic formulation of noncommutative mechanics were the object of noncommutativity $\theta^{\mu\nu}$ is considered as an independent quantity. Its canonical conjugate momentum is also introduced, what permits to obtain an…

High Energy Physics - Theory · Physics 2010-05-25 R. Amorim , E. M. C. Abreu , W. G. Ramirez

We prove variational forms of the Barban-Davenport-Halberstam Theorem and the large sieve inequality. We apply our result to prove an estimate for the sum of the squares of prime differences, averaged over arithmetic progressions.

Number Theory · Mathematics 2012-02-07 Allison Lewko , Mark Lewko

We define the non-stationary analogue of the Wiener algebra and prove a spectral factorization theorem in this algebra.

Operator Algebras · Mathematics 2007-05-23 D. Alpay , H. Attia , S. Ben-Porat , D. Volok

We prove that the von Neumann algebra generated by q-gaussians is not injective as soon as the dimension of the underlying Hilbert space is greater than 1. Our approach is based on a vector valued Khintchine type inequality for Wick…

Operator Algebras · Mathematics 2007-05-23 Alexandre Nou

We study incommensurate fractional variational problems in terms of a generalized fractional integral with Lagrangians depending on classical derivatives and generalized fractional integrals and derivatives. We obtain necessary optimality…

Optimization and Control · Mathematics 2013-10-03 Tatiana Odzijewicz , Agnieszka B. Malinowska , Delfim F. M. Torres

In this paper we establish existence results for the Fractional Nirenberg Equation via the flatness hypothesis. We have been able to include the Morse functions in our study. This extends the previous results obtained bY Yan Yan Li and…

Analysis of PDEs · Mathematics 2016-10-12 W. Abdelhedi , H. Chtioui , H. Hajaiej

We prove an integration by parts formula on the law of the reflecting Brownian motion $X:=|B|$ in the positive half line, where $B$ is a standard Brownian motion. In other terms, we consider a perturbation of $X$ of the form $X^\epsilon =…

Probability · Mathematics 2007-05-23 Lorenzo Zambotti

Let $(\mathcal{G},\nu)$ be a $t$-discrete ergodic groupoid. Consider a finite Von Neumann algebra $\mathcal{M}$ with separable predual. We prove that every uniformly bounded measurable representation $\rho:\mathcal{G} \rightarrow…

Operator Algebras · Mathematics 2025-12-29 Alessio Savini

The Newlander-Nirenberg theorem says that a formally integrable complex structure is locally equivalent to the complex structure in the complex Euclidean space. We will show two results about the Newlander-Nirenberg theorem with parameter.…

Complex Variables · Mathematics 2017-11-30 Xianghong Gong

A classical result of Arne Beurling states that the Fourier transform of a nonzero complex Borel measure $\mu$ on the real line cannot vanish on a set of positive Lebesgue measure if $\mu$ has certain decay. We prove a several variable…

Functional Analysis · Mathematics 2023-06-01 Santanu Debnath , Suparna Sen

We consider a problem of the consistent deformation of physical system introducing a new features, but preserving its fundamental properties. In particular, we study how to implement the noncommutativity of space-time without violation of…

High Energy Physics - Theory · Physics 2014-09-15 V. G. Kupriyanov