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We note a parallel between some ideas of stable model theory and certain topics in finite combinatorics related to the sum-product phenomenon. For a simple linear group G, we show that a finite subset X with |X X \^{-1} X |/ |X| bounded is…

Logic · Mathematics 2011-05-17 Ehud Hrushovski

We provide a sufficient condition under which a closed subgroup of a restricted free pro-p product is itself a free pro-p product.

Group Theory · Mathematics 2025-12-30 Tamar Bar-On

Kolmogorov's axioms of probability theory are extended to conditional probabilities among distinct (and sometimes intertwining) contexts. Formally, this amounts to row stochastic matrices whose entries characterize the conditional…

Quantum Physics · Physics 2023-11-16 Karl Svozil

In the spirit of an earlier result of M\"uller on the Heisenberg group we prove a restriction theorem on a certain class of two step nilpotent Lie groups. Our result extends that of M\"uller also in the framework of the Heisenberg group.

Functional Analysis · Mathematics 2023-02-14 Valentina Casarino , Paolo Ciatti

Under a Zariski density assumption, we extend the classical theorem of Cramer on large deviations of sums of iid real random variables to random matrix products.

Probability · Mathematics 2018-09-05 Cagri Sert

We present a simplified and more intuitive proof of a theorem of Peng and Xiao, which constructs a Lie algebra from any 2-periodic triangulated k-category (satisfying some finiteness assumptions).

Representation Theory · Mathematics 2007-05-23 Andrew Hubery

We derive novel sufficient conditions for convergence of Loopy Belief Propagation (also known as the Sum-Product algorithm) to a unique fixed point. Our results improve upon previously known conditions. For binary variables with…

Artificial Intelligence · Computer Science 2012-07-09 Joris Mooij , Hilbert Kappen

We prove limit theorems for row sums of a rowwise independent infinitesimal array of random variables with values in a locally compact Abelian group. First we give a proof of Gaiser's theorem, since it does not have an easy access and it is…

Probability · Mathematics 2014-03-25 Matyas Barczy , Alexander Bendikov , Gyula Pap

A Lie groupoid, called \textit{material Lie groupoid}, is associated in a natural way to any elastic material. The corresponding Lie algebroid, called \textit{material algebroid}, is used to characterize the uniformity and the homogeneity…

Differential Geometry · Mathematics 2018-11-06 V. M. Jiménez , M. de León , M. Epstein

It is proved that given any three conditionally convergent series of real numbers, there is a single sequence of natural numbers such that each of the corresponding three subseries sums to either $\infty$ or $-\infty$. An example is…

Classical Analysis and ODEs · Mathematics 2018-12-05 Will Brian

Motivated by a search for Lie group structures on groups of Poisson diffeomorphisms [24], we investigate linearizability of Poisson structures of Poisson groupoids around the unit section. After extending the Lagrangian neighbourhood…

Differential Geometry · Mathematics 2022-12-09 Wilmer Smilde

We develop the structure theory of symplectic Lie groups based on the study of their isotropic normal subgroups. The article consists of three main parts. In the first part we show that every symplectic Lie group admits a sequence of…

Differential Geometry · Mathematics 2013-10-15 Oliver Baues , Vicente Cortès

Given tuples of properly normalized independent $N\times N$ G.U.E. matrices $(X_N^{(1)},\dots,X_N^{(r_1)})$ and $(Y_N^{(1)},\dots,Y_N^{(r_2)})$, we show that the tuple $(X_N^{(1)}\otimes I_N,\dots,X_N^{(r_1)}\otimes I_N,I_N\otimes…

Operator Algebras · Mathematics 2024-01-31 Serban Belinschi , Mireille Capitaine

We provide a complete solution to the problem of extending a local Lie groupoid to a global Lie groupoid. First, we show that the classical Mal'cev's theorem, which characterizes local Lie groups that can be extended to global Lie groups,…

Differential Geometry · Mathematics 2019-12-18 Rui Loja Fernandes , Daan Michiels

A Lie groupoid, called \textit{second-order non-holonomic material Lie groupoid}, is associated in a natural way to any Cosserat media. This groupoid is used to give a new definition of homogeneity which does not depend on a reference…

Differential Geometry · Mathematics 2018-08-01 V. M. Jiménez , M. de León , M. Esptein

In this paper, we give strong lower bounds on the size of the sets of products of matrices in some certain groups. More precisely, we prove an analogue of a result due to Chapman and Iosevich for matrices in $SL_2(\mathbb{F}_p)$ with…

Number Theory · Mathematics 2018-03-29 Doowon Koh , Thang Pham , Chun-Yen Shen , Le Anh Vinh

The classical Juzvinski\u{i} Addition Theorem states that the entropy of an automorphism of a compact group decomposes along invariant subgroups. Thomas generalized the theorem to a skew-product setting. Using L. Bowen's f-invariant we…

Dynamical Systems · Mathematics 2012-08-09 Lewis Bowen , Yonatan Gutman

We generalize the classical construction principles of infinite-dimensional real (and complex) Lie groups to the case of Lie groups over non-discrete topological fields. In particular, we discuss linear Lie groups, mapping groups, test…

Group Theory · Mathematics 2007-05-23 Helge Glockner

This paper has two parts. First, we complete the proof of the Kolmogorov extension theorem for unbounded random variables using compactness theorem of integral logic which was proved for bounded case in [8]. Second, we give a proof of the…

Logic · Mathematics 2015-09-22 Seyed-Mohammad Bagheri , Karim Khanaki

The aim of this note is to announce some results about the probabilistic and deterministic asymptotic properties of linear groups. The first one is the analogue, for norms of random matrix products, of the classical theorem of Cramer on…

Probability · Mathematics 2017-02-23 Cagri Sert
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