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A symplectic realization and some symmetries of a Rikitake type system are presented.

Dynamical Systems · Mathematics 2014-04-29 Cristian Lazureanu , Tudor Binzar

Predicting observables in equilibrium states is a central yet notoriously hard question in quantum many-body systems. In the physically relevant thermodynamic limit, certain mathematical formulations of this task have even been shown to…

Quantum Physics · Physics 2025-08-15 Hamza Fawzi , Omar Fawzi , Samuel O. Scalet

We prove the Aharoni Berger Conjecture

Combinatorics · Mathematics 2019-04-16 Vladimir Blinovsky

This talk gives a brief description of goals, expected performance and status of the Icecube project.

Astrophysics · Physics 2019-08-14 Christian Spiering

In this paper I shall resume the results of the MACRO experiment on atmospheric muon neutrino oscillations.

High Energy Physics - Phenomenology · Physics 2019-08-14 Y. Becherini

We study the existence of invariant Einstein metrics on real flag manifolds associated to simple and non-compact split real forms of complex classical Lie algebras whose isotropy representation decomposes into two or three irreducible…

Differential Geometry · Mathematics 2020-07-06 Brian Grajales , Lino Grama

In this article we give general neccessary and sufficient conditions to ensure that a pseudo-Riemannian manifold is conformal to an Einstein space. These conditions are algorithmic in \emph{the metric tensor} whenever the Weyl endomorphism…

Differential Geometry · Mathematics 2026-01-27 Alfonso García-Parrado , Jónatan Herrera , Miguel Vadillo

This paper develops a method for solving Einstein's equation numerically on multi-cube representations of manifolds with arbitrary spatial topologies. This method is designed to provide a set of flexible, easy to use computational…

General Relativity and Quantum Cosmology · Physics 2015-06-18 Lee Lindblom , Bela Szilagyi , Nicholas W. Taylor

We prove strong convergence theorems of some iterative algorithms in a real uniformly smooth Banach space. The results presented extend, generalize and improve the corresponding results recently announced by many authors.

Functional Analysis · Mathematics 2015-08-28 Abba Auwalu

Several conjectural continued fractions found with the help of various algorithms are published in this paper.

Number Theory · Mathematics 2017-04-14 Thomas Baruchel

A description of solutions of some integral equations has been obtained. A two-radii theorem is obtained as well.

Classical Analysis and ODEs · Mathematics 2013-09-17 Olga D. Trofimenko

We present diagonal Einstein metrics for Bianchi III and V, both for minkowskian and euclidean signatures and we show that the Einstein Bianchi III metrics have an integrable geodesic flow.

General Relativity and Quantum Cosmology · Physics 2008-06-19 Galliano Valent

We study the existence of projectable $G$-invariant Einstein metrics on the total space of $G$-equivariant fibrations $M=G/L\to G/K$, for a compact connected semisimple Lie group $G$. We obtain necessary conditions for the existence of such…

Differential Geometry · Mathematics 2009-11-15 Fatima Araujo

Simple natural proofs of all known results regarding the aerodynamic Newton problem are obtained. Additional new theorems and new promising formulas in terms of Hessian measures are found. We would like to express our deep gratitude to Gerd…

Optimization and Control · Mathematics 2019-04-30 L. V. Lokutsievskiy , M. I. Zelikin

In the context of Higman embeddings of recursive groups into finitely presented groups we suggest an algorithm which uses Higman operations to explicitly constructs the specific recursively enumerable sets of integer sequences arising…

Group Theory · Mathematics 2023-10-18 V. H. Mikaelian

It is shown that any set of nonzero monomial prime ideals can be realized as the stable set of associated prime ideals of a monomial ideal. Moreover, an algorithm is given to compute the stable set of associated prime ideals of a monomial…

Commutative Algebra · Mathematics 2011-10-12 Shamila Bayati , Jürgen Herzog , Giancarlo Rinaldo

We discuss a number of topics in the area of conformally compact Einstein metrics, mostly centered around the global existence question of finding such metrics with an arbitrarily prescribed conformal infinity. The paper is partly a survey…

Differential Geometry · Mathematics 2007-05-23 Michael T. Anderson

The Einstein's equivalence principle is formulated in terms of the accuracy of measurements and its dependence of the size of the area of measurement. It is shown that different refinements of the statement 'the spacetime is locally flat'…

General Relativity and Quantum Cosmology · Physics 2007-05-23 Vladik Kreinovich , R. R. Zapatrin

It is shown that all homogeneous pure radiation solutions to the Einstein equations admit electromagnetic sources. This corrects an error in the literature.

General Relativity and Quantum Cosmology · Physics 2015-06-04 C. G. Torre

This short technical report illustrates the results of a test procedure we performed to validate the computer simulation of the HyQ robot.

Robotics · Computer Science 2016-04-26 Marco Frigerio , Victor Barasuol , Michele Focchi , Claudio Semini