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We give two proofs of the Kalman Theorem, alternative to the most common ones, which infer such a classical result of Control Theory using just very basic facts on flows of vector fields. These proofs are apt to be generalised in diverse…

Optimization and Control · Mathematics 2025-03-07 Fabio Bagagiolo , Cristina Giannotti , Andrea Spiro , Marta Zoppello

Establishing that a demand mapping is injective is core first step for a variety of methodologies. When a version of the law of demand holds, global injectivity can be checked by seeing whether the demand mapping is constant over any line…

Econometrics · Economics 2019-08-19 Roy Allen

Consider a finite-dimensional real vector space equipped with a finite group acting unitarily on it. We address the general problem of constructing Euclidean stable embeddings of the quotient space of orbits. Our approach is based on…

Representation Theory · Mathematics 2025-08-15 Radu Balan , Efstratios Tsoukanis

We provide a permutation-invariant version of the Koml\'os' theorem for non-negative random variables. The proof is quite elementary in the sense that it did not use the Axiom of Choice, and was based on a recent result in [3].

Functional Analysis · Mathematics 2022-08-23 Abdessamad Dehaj , Mohamed Guessous , Noureddine Sabiri

We apply the G\"artner--Ellis theorem on large deviations to prove a weak version of the Loughran--Smeets conjecture for general fibrations.

Number Theory · Mathematics 2025-09-22 Sun Woo Park , Efthymios Sofos

We give a new criterion for solvability of group equations, providing proofs of various generalizations of the Kervaire-Laudenbach conjecture for Connes-embeddable groups.

Group Theory · Mathematics 2021-09-27 Martin Nitsche , Andreas Thom

The purpose of this survey is to present analytic versions of the injectivity theorem and their applications. The proof of our injectivity theorems is based on a combination of the L^2-method for the dbar-equation and the theory of harmonic…

Complex Variables · Mathematics 2015-11-16 Shin-ichi Matsumura

Some known constraints on Renormalization Group flow take the form of inequalities: in even dimensions they refer to the coefficient $a$ of the Weyl anomaly, while in odd dimensions to the sphere free energy $F$. In recent work…

High Energy Physics - Theory · Physics 2016-01-27 Lin Fei , Simone Giombi , Igor R. Klebanov , Grigory Tarnopolsky

In this paper we prove Conjecture \ref{conj1} for a set of representations of the group $GL_n({\bf A})$. This Conjecture is stated in complete generality as Conjecture 1 in \cite{G2}, and here we prove it for various cases. See Conjecture…

Number Theory · Mathematics 2016-09-20 David Ginzburg

In this paper, we give a short proof of a theorem by Koll\'{a}r on hereditarily rational functions. This is an answer to his appeal to find an elementary proof which does not rely so much on resolution of singularities. Our approach does…

Algebraic Geometry · Mathematics 2012-11-29 Krzysztof Jan Nowak

We show injectivity results for assembly maps using equivariant coarse homology theories with transfers. Our method is based on the descent principle and applies to a large class of linear groups or, more general, groups with finite…

K-Theory and Homology · Mathematics 2021-05-28 Ulrich Bunke , Alexander Engel , Daniel Kasprowski , Christoph Winges

In this paper, we validate the main theorems establishing the justification of Koiter's model, established by Ciarlet and his associates, for all the types of linearly elastic shells via a set of numerical experiments.

Numerical Analysis · Mathematics 2021-12-28 Wangxi Duan , Paolo Piersanti , Xiaoqin Shen , Qian Yang

We give a simple proof of Dorronsoro's theorem and use similar ideas to establish an equivalence for embeddings of vector fields.

Classical Analysis and ODEs · Mathematics 2015-06-23 Dmitriy Stolyarov

Recently, Cochran and Harvey defined torsion-free derived series of groups and proved an injectivity theorem on the associated torsion-free quotients. We show that there is a universal construction which extends such an injectivity theorem…

Geometric Topology · Mathematics 2007-05-23 Jae Choon Cha

In this paper, by using analytical methods we obtain a generalization of the famous Kodaira embedding theorem.

Differential Geometry · Mathematics 2019-09-27 Chao Li , Xi Zhang , QiZhi Zhao

A version of Jonsson's theorem, as previously generalized, holds in non-modular varieties.

Rings and Algebras · Mathematics 2007-05-23 William H. Rowan

We prove the Shafarevich conjecture for varieties with globally generated cotangent bundle, subject to mild numerical conditions.

Algebraic Geometry · Mathematics 2025-03-27 Thomas Krämer , Marco Maculan

We prove a local version of the Mazur-Ulam theorem.

Functional Analysis · Mathematics 2009-05-12 Osamu Hatori

We discuss the proof of a certain integral theorem obtained by C. G. Cullen, originally stated on the class of the analytic intrinsic functions on the quaternions. It is shown that this integral theorem is true for a larger class of…

Complex Variables · Mathematics 2010-09-22 Daniel Alayon-Solarz

We prove the K- and L-theoretic Farrell-Jones Conjecture (with coefficients in additive categories) for GL_n(Z).

K-Theory and Homology · Mathematics 2013-05-08 Arthur Bartels , Wolfgang Lueck , Holger Reich , Henrik Rueping