Results 51 to 60 of about 1,515,012 (182)
Advanced Science, Volume 13, Issue 33, 15 June 2026.We introduce AutomataGPT, a generative pretrained transformer (GPT) trained on synthetic spatiotemporal data from 2D cellular automata to learn symbolic rules. Demonstrating strong performance on both forward and inverse tasks, AutomataGPT establishes a scalable, domain‐agnostic framework for interpretable modeling, paving the way for future ...
Jaime A. Berkovich +2 more
wiley +1 more source
Solitons and geometrical structures in a perfect fluid spacetime [PDF]
Rocky Mountain Journal of Mathematics, 2020 Geometrical aspects of a perfect fluid spacetime are described in terms of different curvature tensors and $η$-Ricci and $η$-Einstein solitons in a perfect fluid spacetime are determined. Conditions for the Ricci soliton to be steady, expanding or shrinking are also given.
openaire +4 more sources
Annalen der Physik, Volume 538, Issue 6, June 2026.This study examines slowly rotating traversable wormholes supported by string fluids whose properties change with radius. The matter smoothly shifts from a de Sitter‐like core to a string‐dominated exterior, producing a regular, horizon‐free spacetime.
A. Errehymy +5 more
wiley +1 more source
A perfect-fluid spacetime for a slightly deformed mass [PDF]
Gravitation, Astrophysics, and Cosmology, 2016 submitted to the proceedings of ICGAC-12 http://rgs.vniims.ru/icgac12.htm, 2 ...
Abishev, Medeu +3 more
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Fortschritte der Physik, Volume 74, Issue 6, June 2026.ABSTRACT We present a clear, step‐by‐step method for counting degrees of freedom and identifying constraints in general field theories. This approach, grounded in the works of Einstein, Hilbert, Cartan, Kuranishi, and, more recently, Seiler, is neither Lagrangian nor Hamiltonian in nature. Instead, it applies directly to the field equations. We offer a
Lavinia Heisenberg
wiley +1 more source
Homothetic Ricci collineations in non-static plane symmetric spacetimes with perfect fluid matter
, 2018 In this paper, we investigate homothetic Ricci collineations (HRCs) for non-static plane symmetric spacetimes. The source of the energy–momentum tensor is assumed to be a perfect fluid.
Tahir Hussain, Sumaira Saleem Akhtar
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Pacific Philosophical Quarterly, Volume 107, Issue 2, Page 58-73, June 2026.ABSTRACT I develop an axiomatic system of mereology that accounts for the ways in which musical works can be said to have parts. I distinguish two fundamental modes of composition that musical works exhibit: successive composition, whereby sound events are concatenated in time, and simultaneous composition, whereby sound events occur at the same time ...
Alejandro G. Di Rienzo
wiley +1 more source
Neutrinos in perfect fluid spacetimes with local rotational symmetry
, 1982 The neutrino perturbations on the background of perfect fluid spacetimes with local rotational symmetry can be treated with the aid of the Debye-potential (two-component Hertz potential) formalism.
Cohen, J.M. +5 more
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Perfect fluid tori orbiting Kehagias–Sfetsos naked singularities [PDF]
, 2015 We construct perfect fluid tori in the field of the Kehagias–Sfetsos (K–S) naked singularities. These are spherically symmetric vacuum solutions of the modified Hořava quantum gravity, characterized by a dimensionless parameter $$\omega M^2$$, combining ...
D. Pugliese +3 more
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Systems Research and Behavioral Science, Volume 43, Issue 3, Page 958-977, May/June 2026.ABSTRACT Access to forests, farming land and the Citarum river is limited in Tarumajaya; furthermore, many do not own their own housing and are dependent on the public and private landowners in the area. The region of Tarumajaya faces significant challenges in access to crucial resources such as forests, farming land and the Citarum river, leading to a
Rudolf Wirawan +4 more
wiley +1 more source