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We prove that the bilinear Hilbert transforms and maximal functions along certain general plane curves are bounded from $L^2(\mathbb{R})\times L^2(\mathbb{R})$ to $L^1(\mathbb{R})$.

Classical Analysis and ODEs · Mathematics 2014-03-24 Jingwei Guo , Lechao Xiao

This book introduces the mathematical foundations and techniques that lead to the development and analysis of many of the algorithms that are used in machine learning. It starts with an introductory chapter that describes notation used…

Machine Learning · Statistics 2025-05-15 Laurent Younes

In this work, Miller Ross function with bicomplex arguments has been introduced. Various properties of this function including recurrence relations, integral representations and differential relations are established. Furthermore, the…

Complex Variables · Mathematics 2024-08-26 Snehasis Bera , Sourav Das , Abhijit Banerjee

Sharp upper and lower bounds for the second and third order Hermitian-Toepilitz determinants are obtained for some generalized subclasses of starlike and convex functions. Applications of these results are also discussed for several widely…

Complex Variables · Mathematics 2022-10-25 Surya Giri , S. Sivaprasad Kumar

For family $x'=(a_0+a_1\cos t+a_2 \sin t)|x|+b_0+b_1 \cos t+b_2 \sin t$, we solve three basic problems related with its dynamics. First, we characterize when it has a center (Poincar\'e center focus problem). Second, we show that each…

Dynamical Systems · Mathematics 2023-07-31 J. L. Bravo , M. Fernandez , I. Ojeda

We discuss a general definition of likelihood function in terms of Radon-Nikod\'{y}m derivatives. The definition is validated by the Likelihood Principle once we establish a result regarding the proportionality of likelihood functions under…

Statistics Theory · Mathematics 2021-06-22 Flávio B. Gonçalves , Pedro Franklin

This article presents a simple characterization for entangled vectors in a finite dimensional Hilbert space $H$. The characterization is in terms of the coefficients of an expansion of the vector relative to an orthonormal basis for $H$.…

Quantum Physics · Physics 2019-02-26 Stan Gudder

The Humbert-Bessel are multi-index functions with various applications in electromagnetism. New families of functions sharing some similarities with Bessel functions are often introduced in the mathematical literature, but at a closer…

Functional Analysis · Mathematics 2012-12-19 D. Babusci , G. Dattoli , E. Di Palma , E. N. Petropoulou

We give new integral and series representations of the Hurwitz zeta function. We also provide a closed-form expression of the coefficients of the Laurent expansion of the Hurwitz-zeta function about any point in the complex plane.

Number Theory · Mathematics 2012-05-04 Lazhar Fekih-Ahmed

We study the closed convex hull of various collections of Hilbert functions. Working over a standard graded polynomial ring with modules that are generated in degree zero, we describe the supporting hyperplanes and extreme rays for the…

Commutative Algebra · Mathematics 2016-05-27 Mats Boij , Gregory G. Smith

With the increasing importance of the Mittag-Leffler function in the physical applications, these days many researchers are studying various generalizations and extensions of the Mittag-Leffler function. In this paper efforts are made to…

Complex Variables · Mathematics 2021-07-20 Ritu Agarwal , Urvashi Purohit Sharma , Ravi P. Agarwal

Hilbert's epsilon-calculus is based on an extension of the language of predicate logic by a term-forming operator $\epsilon_{x}$. Two fundamental results about the epsilon-calculus, the first and second epsilon theorem, play a role similar…

Logic · Mathematics 2015-04-21 Georg Moser , Richard Zach

We are concerned with describing the structure of the set of points in the unit interval which, when subjected to rotation by irrational alpha modulo one, for all finite portions of the orbit contain at least as many points in the bottom…

Dynamical Systems · Mathematics 2011-06-06 David Ralston

Recently, functional It\=o calculus has been introduced and developed in finite dimension for functionals of continuous semimartingales. With different techniques, we develop a functional It\=o calculus for functionals of Hilbert…

Probability · Mathematics 2018-06-22 Mauro Rosestolato

We simplify the proof of some widely used theoretical theorems, extending their applicability, while correcting some erroneous results. We also generalize key results and present new results that contribute to the development of the theory.…

Classical Analysis and ODEs · Mathematics 2025-10-02 V. E. Sándor Szabó

In this paper we give quite pretty generalization of the formula of Frobenius-Stickelberger to all hyperelliptic curves. The formula of Kiepert type is also obtained by limiting process from this generalization. In Appendix a determinant…

Number Theory · Mathematics 2007-05-23 Yoshihiro Ônishi

We discuss a general method to learn data representations from multiple tasks. We provide a justification for this method in both settings of multitask learning and learning-to-learn. The method is illustrated in detail in the special case…

Machine Learning · Statistics 2016-03-28 Andreas Maurer , Massimiliano Pontil , Bernardino Romera-Paredes

We begin the study of completeness of affine connections, especially those on statistical manifolds as well as on affine hypersurfaces. We collect basic facts, prove new theorems and provide examples with remarkable properties.

Differential Geometry · Mathematics 2020-03-27 Barbara Opozda

We use an upper bound on Jacobsthal's function to complete a proof of a known density result. Apart from the bound on Jacobsthal's function used here, the proof we are completing uses only elementary methods and Dirichlet's theorem on the…

Number Theory · Mathematics 2012-10-04 Timothy Foo

These are the notes written for the talk given at the workshop Rethinking foundations of physics 2016. In section 2, a derivation of the the quantum formalism starting from propositional calculus (quantum logic) is reviewed, pointing out…

Quantum Physics · Physics 2017-08-29 Luca Curcuraci