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Related papers: Conformal restriction: the radial case

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In this paper, we introduce a conformal prediction method to construct prediction sets in a oneshot federated learning setting. More specifically, we define a quantile-of-quantiles estimator and prove that for any distribution, it is…

Machine Learning · Statistics 2023-08-01 Pierre Humbert , Batiste Le Bars , Aurélien Bellet , Sylvain Arlot

We approximate a chain recurrent dynamical system by periodic dynamical systems. This is similar to the well known Bohr theorem on approximation of almost periodic functions by periodic functions.

Dynamical Systems · Mathematics 2008-04-05 Vladimir Azarin

We study the sets of radial or nontangential limit points towards $i\infty$ of a Nevanlinna function q. Given a nonempty, closed, and connected subset L of $C_+$ , we explicitly construct a Hamiltonian H such that the radial- and outer…

Functional Analysis · Mathematics 2021-06-09 Raphael Pruckner , Harald Woracek

Let M be a compact manifold with boundary. In this paper, we discuss some rigidity theorems of metrics in a same conformal class that fixes the boundary and satisfy certain integral conditions on the the scalar curvatures and the mean…

Differential Geometry · Mathematics 2014-11-26 Ezequiel Barbosa , Heudson Mirandola , Feliciano Vitorio

We straighten a result of [5] about arithmetic properties of the Laurent coefficients of the conformal isomorphism from the complement of the unit disk onto the complement of the Mandelbrot set. This confirms an empirical observation by Don…

Dynamical Systems · Mathematics 2014-01-22 Genadi Levin

We investigate regularization of riemannian metrics by mollification. Assuming both-sided bounds on the Ricci tensor and a lower injectivity radius bound we obtain a uniform estimate on the change of the sectional curvature. Actually, our…

Differential Geometry · Mathematics 2020-03-30 Daniel Luckhardt , Jan-Bernhard Kordaß

A permutation sequence is said to be convergent if the density of occurrences of every fixed permutation in the elements of the sequence converges. We prove that such a convergent sequence has a natural limit object, namely a Lebesgue…

In the field of radial basis functions mathematicians have been endeavouring to find infinitely differentiable and compactly supported radial functions. This kind of functions are extremely important for some reasons. First, its…

Numerical Analysis · Mathematics 2007-05-23 Lin-Tian Luh

We find new bounds on the conformal dimension of small cancellation groups. These are used to show that a random few relator group has conformal dimension 2+o(1) asymptotically almost surely (a.a.s.). In fact, if the number of relators…

Group Theory · Mathematics 2018-12-13 John M. Mackay

Consider a rowwise independent triangular array of gamma random variables with varying parameters. Under several different conditions on the shape parameter, we show that the sequence of row-maximums converges weakly after linear or power…

Probability · Mathematics 2009-03-06 Arup Bose , Amites Dasgupta , Krishanu Maulik

Canonical formalism for SO(2) is developed. This group can be seen as a toy model of the Hamilton-Dirac mechanics with constraints. The Lagrangian and Hamiltonian are explicitly constructed and their physical interpretation are given. The…

Mathematical Physics · Physics 2015-06-26 Eugen Paal , Jyri Virkepu

We define reduction of locally conformal Kaehler manifolds, considered as conformal Hermitian manifolds, and we show its equivalence with an unpublished construction given by Biquard and Gauduchon. We show the compatibility between this…

Differential Geometry · Mathematics 2007-05-23 Rosa Gini , Liviu Ornea , Maurizio Parton

We provide the full classification, in arbitrary even and odd dimensions, of global conformal invariants, i.e., scalar densities in the spacetime metric and its derivatives that are invariant, possibly up to a total derivative, under local…

Mathematical Physics · Physics 2019-07-05 Nicolas Boulanger , Jordan François , Serge Lazzarini

The complement of a Cantor set in the complex plane is itself regarded as a Riemann surface of infinite type. The problem is the quasiconformal equivalence of such Riemann surfaces. Particularly, we are interested in Riemann surfaces given…

Complex Variables · Mathematics 2019-08-30 Hiroshige Shiga

We construct a conformally invariant random family of closed curves in the plane by welding of random homeomorphisms of the unit circle. The homeomorphism is constructed using the exponential of $\beta X$ where $X$ is the restriction of the…

Complex Variables · Mathematics 2009-09-08 K. Astala , P. Jones , A. Kupiainen , E. Saksman

An exactly solvable time-dependent quantum mechanical problem is employed to study the convergence properties of transition amplitudes calculated by using the Schwinger variational principle. A detailed comparison between the amplitudes…

Atomic Physics · Physics 2016-05-09 V. D. Rodríguez

In this work, we give the power series solutions around an ordinary point, in the case of variable coefficients, homogeneous sequential linear conformable fractional differential equations of order 2\alpha. Further, we introduce the…

Classical Analysis and ODEs · Mathematics 2016-02-16 Emrah Ünal , Ahmet Gökdoğan , Ercan Çelik

We derive some necessary conditions on a Riemannian metric $(M, g)$ in four dimensions for it to be locally conformal to K\"ahler. If the conformal curvature is non anti--self--dual, the self--dual Weyl spinor must be of algebraic type $D$…

Differential Geometry · Mathematics 2015-05-13 Maciej Dunajski , Paul Tod

We prove that for any non-symmetric irreducible divisible convex set, the proximal limit set is the full projective boundary.

Metric Geometry · Mathematics 2021-06-15 Pierre-Louis Blayac

We consider a random process as a solution of stochastic differential equations with dependence of the coefficients on small parameter $\varepsilon$ and we suppose that the drift coefficients of these equations are unbounded on the…

Probability · Mathematics 2023-12-15 Ivan H. Krykun