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Related papers: The Tychonic system, an implausible theory

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Two approaches to the old problem of the so-called "knee" in cosmic ray spectrum are compared with the existing experimental data. It is shown that "standard astrophysical model" of the knee is not supported by some experimental data, while…

Astrophysics · Physics 2016-08-30 Yuri V. Stenkin

The three-body problem has been studied for more than three centuries [1,2], and has received much attention in recent years [3-5]. It shows complex dynamical phenomena due to the mutual gravitational interaction of the three bodies. Triple…

Chaotic Dynamics · Physics 2021-01-05 Xiaoming Li , Xiaochen Li , Shijun Liao

We consider different generalizations of the Brachistochrone Problem in the context of fundamental concepts of classical mechanics. The correct statement for the Brachistochrone problem for nonholonomic systems is proposed. It is shown that…

Classical Physics · Physics 2021-05-04 Oleg Zubelevich

The realistic interpretation of classical theory assumes that every classical system has well-defined properties, which may be unknown to the observer but are nevertheless part of reality and can in principle be revealed by measurements.…

Quantum Physics · Physics 2024-06-13 Giulio Chiribella , Lorenzo Giannelli , Carlo Maria Scandolo

In a previous article, we discussed a paradox in Timaeus' cosmology: that there is no void inside the universe, even though it is entirely filled with polyhedra-a mathematical impossibility (Brisson-Ofman 2025). In the present article, we…

History and Overview · Mathematics 2025-04-04 Salomon Ofman , Luc Brisson

The work presents the second part of the second edition of its previous one published in 2000 under the same title, containing the proof (in ZF) of the inaccessible cardinals nonexistence, which is enriched and improved now. This part…

Logic · Mathematics 2011-10-13 A. Kiselev

Wolfram's hypergraph dynamics should replace outmoded models in physics. This should even more so be the case if experimental evidence for the theory is found (which I believe is probable). However, due to the breadth and depth of the…

History and Philosophy of Physics · Physics 2024-11-25 Joseph Natal

Eugene Wigner's much-discussed notion of the "unreasonable effectiveness of mathematics" as applied to describing the physics of empirical reality is simultaneously both trivial and profound. After all, the relevant mathematics was (in the…

Mathematical Physics · Physics 2022-09-19 Matt Visser

In his 1606 De Stella Nova, Johannes Kepler attempted to answer Tycho Brahe's argument that the Copernican heliocentric hypothesis required all the fixed stars to dwarf the Sun, something Brahe found to be a great drawback of that…

History and Philosophy of Physics · Physics 2018-02-12 Christopher M. Graney

Supportive attitudes can bring to a blossoming science, while neglect can quickly make science absent from everyday life and provide a very primitive view of the world. We compare one important Greek achievement, the computation of the…

History and Overview · Mathematics 2012-05-07 Khristo N. Boyadzhiev

The chaotic behaviour of the motion of the planets in our Solar System is well established. In this work to model a hypothetical extrasolar planetary system our Solar System was modified in such a way that we replaced the Earth by a more…

Classical Physics · Physics 2009-11-11 Áron Süli , Rudolf Dvorak

The recently proposed Euclidean index offers a novel approach to measure the citation impact of academic authors, in particular as an alternative to the h-index. We test if the index provides new, robust information, not covered by existing…

Digital Libraries · Computer Science 2017-03-08 Jens Peter Andersen

The model of the Universe in this paper uses equations of the unperturbed Keplerian motion. They have been updated, complementied and generalized when the solution of these equations is the characteristic function of a random value from the…

General Physics · Physics 2007-11-09 Felix Hovsepian

Galileon models are a class of effective field theories that have recently received much attention. They arise in the decoupling limit of theories of massive gravity, and in some cases they have been treated in their own right as scalar…

High Energy Physics - Theory · Physics 2015-06-03 Clare Burrage , Claudia de Rham , Lavinia Heisenberg , Andrew J. Tolley

This is a response to the note criticizing my paper A New Paradox in Superluminal Signaling. The criticism is based, among other things, on arbitrarily postulated statement about invarience of direction of superluminal information transfer.…

General Physics · Physics 2022-03-24 Moses Fayngold

This paper offers a synthesis of the positions in the literature regarding controversies about the multiverse. After reviewing some simple elements of modern cosmology and its observational limitations, we will present the history of the…

History and Philosophy of Physics · Physics 2020-09-15 Alejandro Gangui

Observational astronomy is the beneficiary of an ancient chain of apprenticeship. Kepler's laws required Tycho's data. As the pace of discoveries has increased over the centuries, so has the cadence of tutelage (literally, "watching over").…

Astrophysics · Physics 2009-11-13 Robert Seaman

Since the dawn of telescopic astronomy astronomers have observed and measured the "spurious" telescopic disks of stars, generally reporting that brighter stars have larger disks than fainter stars. Early observers such as Galileo Galilei…

History and Philosophy of Physics · Physics 2010-11-01 Christopher M. Graney , Timothy P. Grayson

Gray (2015) argued that the Fermi paradox (FP) is a misnomer, and it is not a valid paradox. Gray also speculated that the argument was misattributed to Fermi, whose lunchtime remarks did not pertain to the existence of extraterrestrial…

General Physics · Physics 2016-10-03 Milan M. Cirkovic

One way to warn of forthcoming critical transitions in Earth system components is using observations to detect declining system stability. It has also been suggested to extrapolate such stability changes into the future and predict tipping…

Geophysics · Physics 2024-08-14 Maya Ben-Yami , Andreas Morr , Sebastian Bathiany , Niklas Boers
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