Results 71 to 80 of about 16,140 (179)
Fortschritte der Physik, Volume 74, Issue 4, April 2026.ABSTRACT In this paper, we continue the development of the Cartan neural networks programme, launched with three previous publications, by focusing on some mathematical foundational aspects that we deem necessary for our next steps forward. The mathematical and conceptual results are diverse and span various mathematical fields, but the inspiring ...
Pietro Fré +4 more
wiley +1 more source
A Scalable Architecture for Secured Access to Distributed Services
EAI Endorsed Transactions on Scalable Information Systems, 2017 Web services which are an implementation of Services Oriented Architecture (SOA), are emergent technologies and promising the development, the deployment and the integration of Internet applications. They are initially based on three main layers that are
Telesphore Tiendrebeogo
doaj +1 more source
Gravitational Wave Signals from Chaotic System: A Point Mass with A Disk
, 2007 We study gravitational waves from a particle moving around a system of a point mass with a disk in Newtonian gravitational theory. A particle motion in this system can be chaotic when the gravitational contribution from a surface density of a disk is ...
G. Contopoulos +8 more
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Piecewise deterministic quantum dynamics and quantum fractals on the Poincaré disk [PDF]
Reports on Mathematical Physics, 2004 Added Concluding Remarks, improved figure captions, updated references.
openaire +2 more sources
On the Euler characteristic of S$S$‐arithmetic groups
Journal of the London Mathematical Society, Volume 113, Issue 3, March 2026.Abstract We show that the sign of the Euler characteristic of an S$S$‐arithmetic subgroup of a simple algebraic group depends on the S$S$‐congruence completion only, except possibly in type 6D4${}^6 D_4$. Consequently, the sign is a profinite invariant for such S$S$‐arithmetic groups with the congruence subgroup property. This generalizes previous work
Holger Kammeyer, Giada Serafini
wiley +1 more source
Z2-symmetric planar polynomial Hamiltonian systems of degree 3 with nilpotent centers
Electronic Journal of Differential Equations, 2019 We provide the normal forms of all $\mathbb{Z}_2$-symmetric planar polynomial Hamiltonian systems of degree 3 having a nilpotent center at the origin.
Fabio Scalco Dias +2 more
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Introducing a new 3D dynamical model for barred galaxies
, 2015 The regular or chaotic dynamics of an analytical realistic three dimensional model composed of a spherically symmetric central nucleus, a bar and a flat disk is investigated.
Jung, Christof, Zotos, Euaggelos E.
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Symmetric spaces and star representations III. The Poincaré disc [PDF]
, 2004 This article is a contribution to the domain of (convergent) deformation quantization of symmetric spaces by use of Lie groups representation theory. We realize the regular representation of $SL(2,\R)$ on the space of smooth functions on the Poincaré disc as a sub-representation of $SL(2,\R)$ in the Weyl-Moyal star product algebra on $\R^2$.
Bieliavsky, P., Pevzner, M.
openaire +2 more sources
Mating parabolic rational maps with Hecke groups
Proceedings of the London Mathematical Society, Volume 132, Issue 3, March 2026.Abstract We prove that any degree d$d$ rational map having a parabolic fixed point of multiplier 1 with a fully invariant and simply connected immediate basin of attraction is mateable with the Hecke group Hd+1$\mathcal {H}_{d+1}$, with the mating realised by an algebraic correspondence.
Shaun Bullett +3 more
wiley +1 more source
Chiellini Hamiltonian Lienard differential systems
Electronic Journal of Differential Equations, 2019 We characterize the centers of the Chiellini Hamiltonian Lienard second-order differential equations $x'=y$, $y'=-f(x) y -g(x)$ where $g(x)=f(x) (k - \alpha (1 +\alpha) \int f(x) dx )$ with $\alpha, k \in \mathbb{R}$.
Jaume Gine, Jaume Llibre, Claudia Valls
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