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We compare three notions of genericity of separable metric structures. Our analysis provides a general model theoretic technique of showing that structures are generic in descriptive set theoretic (topological) sense and in measure…

Logic · Mathematics 2008-02-04 Alexander Usvyatsov

We study groups generated by three half-turns in the Lobachevsky $3$-space and their quotient orbifolds. These generalized triangle groups are closely related to the arbitrary 2-generator Kleinian groups. Our main result is a classification…

Metric Geometry · Mathematics 2016-10-20 Mikhail Belolipetsky

The correspondence between definable connected groupoids in a theory $T$ and internal generalised imaginary sorts of $T$, established by Hrushovski in ["Groupoids, imaginaries and internal covers," Turkish Journal of Mathematics, 2012], is…

Logic · Mathematics 2017-11-10 Levon Haykazyan , Rahim Moosa

Relative orbifold Gromov-Witten theory is set-up and the degeneration formula is given.

Symplectic Geometry · Mathematics 2025-01-17 Bohui Chen , An-Min Li , Shanzhong Sun , Guosong Zhao

We establish a relative version of Gromov's Vanishing Theorem in the presence of amenable open covers with small multiplicity, extending a result of Li, L\"oh, and Moraschini. Our approach relies on Gromov's theory of multicomplexes.

Algebraic Topology · Mathematics 2025-11-20 Pietro Capovilla

We prove that pseudo-Anosov mapping classes are generic with respect to certain notions of genericity reflecting that we are dealing with mapping classes.

Geometric Topology · Mathematics 2021-03-04 Viveka Erlandsson , Juan Souto , Jing Tao

We formulate and study an extension of gerbe duality to relative Gromov-Witten theory.

Algebraic Geometry · Mathematics 2022-10-28 Xiang Tang , Hsian-Hua Tseng

We establish the equivalence of Gromov ellipticity and subellipticity in the algebraic category.

Algebraic Geometry · Mathematics 2023-01-10 Shulim Kaliman , Mikhail Zaidenberg

Grigorchuk and de la Harpe asked if there are many groups with growth exponent close to that of the free group with the same number of generators. We prove that this is in fact the case for a generic group (in the density model of random…

Group Theory · Mathematics 2007-05-23 Yann Ollivier

We study the difference between internal categories and internal groupoids in terms of generalised Mal'tsev properties---the weak Mal'tsev property on the one hand, and $n$-permutability on the other. In the first part of the article we…

Category Theory · Mathematics 2014-08-19 Nelson Martins-Ferreira , Tim Van der Linden

Anstee, Przyticki and Rolfsen introduced the idea of rotants, pairs of links related by a generalised form of link mutation. We exhibit infinitely many pairs of rotants which can be distinguished by Khovanov homology, but not by the Jones…

Geometric Topology · Mathematics 2019-08-15 Joseph MacColl

Group model selection is the problem of determining a small subset of groups of predictors (e.g., the expression data of genes) that are responsible for majority of the variation in a response variable (e.g., the malignancy of a tumor).…

Statistics Theory · Mathematics 2018-03-06 Waheed U. Bajwa , Dustin G. Mixon

The theory of random real numbers is exceedingly well-developed, and fascinating from many points of view. It is also quite challenging mathematically. The present notes are intended as no more than a gateway to the larger theory. They…

Computational Complexity · Computer Science 2012-09-14 Daniel Osherson , Scott Weinstein

In this paper, we study relations among known universal equations for Gromov-Witten invariants at genus 1 and 2.

Differential Geometry · Mathematics 2007-05-23 Xiaobo Liu

We consider orthogonally invariant probability measures on $\mathrm{GL}_n(\mathbb{R})$ and compare the mean of the logs of the moduli of eigenvalues of the matrices to the Lyapunov exponents of random matrix products independently drawn…

Dynamical Systems · Mathematics 2022-08-23 Diego Armentano , Gautam Chinta , Siddhartha Sahi , Michael Shub

In the present paper, we studied the voronovskaja type theorem for general Gamma type operators. Also, we obtain an error estimate for general Gamma type operators.

Numerical Analysis · Mathematics 2015-09-17 Alok Kumar

In the density model of random groups, we consider presentations with any fixed number m of generators and many random relators of length l, sending l to infinity. If d is a "density" parameter measuring the rate of exponential growth of…

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

A generalised Amit-Roginsky vector model in flat space is obtained as the effective dynamics of pertubations around a classical solution of the Boulatov group field theory for 3d euclidean quantum gravity, extended to include additional…

High Energy Physics - Theory · Physics 2024-03-13 Victor Nador , Daniele Oriti , Xiankai Pang , Adrian Tanasa , Yi-Li Wang

We find a surprising link between Maz'ya-Shaposhnikova's well-known asymptotic formula concerning fractional Sobolev seminorms and the generalized Bishop-Gromov inequality. In the setting of abstract metric measure spaces we prove the…

Metric Geometry · Mathematics 2024-02-20 Bang-Xian Han , Andrea Pinamonti , Zhefeng Xu , Kilian Zambanini