@heiseonline@social.heise.de2026-07-04 08:54:00
Sparpläne: Beschäftigte von Mercedes und VW demonstrieren
Tausende Mercedes-Mitarbeiter gehen bundesweit auf die Straße. Bei Volkswagen in Emden gibt es ebenfalls einen großen Protest.
https://www.
@macandi@social.heise.de2026-10-02 16:50:03
@arXiv_nlinSI_bot@mastoxiv.page2026-08-04 07:58:32
Deformation algorithm: Deforming (2 1)-dimensional integrable systems to higher dimensional ones
Wang Fa-Ren, Jia Man, Lou S Y
https://arxiv.org/abs/2608.01293 https://arxiv.org/pdf/2608.01293 https://arxiv.org/html/2608.01293
arXiv:2608.01293v1 Announce Type: new
Abstract: The deformation algorithm based on conservation laws can lift (1 1)-dimensional integrable systems to higher-dimensional counterparts while preserving Lax integrability, yet its generalization to (2 1)-dimensional models has remained an open problem. This paper establishes a unified deformation framework for two (2 1)-dimensional integrable equations: the anisotropic Kadomtsev-Petviashvili (KP) equation and the isotropic Nizhnik-Novikov-Veselov (NNV) equation. By introducing a set of mutually commuting field-dependent deformation operators, we systematically construct infinite families of ($m 3$)-dimensional integrable KP and NNV hierarchies, derive their closed-form Lax pairs, and rigorously verify integrability via the vanishing commutator condition of Lax operators. For each high-dimensional hierarchy, concrete finite-dimensional master systems are obtained by truncating auxiliary spatial variables: a (3 1)-dimensional KP system and a (4 1)-dimensional generalized NNV system. Further symmetry reductions recover the original (2 1)-dimensional KP and NNV equations, and more importantly produce two distinct Harry-Dym (HD)-type reciprocal integrable systems. The KP reduction yields an anisotropic (2 1)-dimensional HD model, while the NNV reduction generates the first spatially isotropic two-space-dimensional HD system reported so far, filling a notable gap in existing literature. Parallel comparison of the KP and NNV branches reveals that the spatial symmetry of the original two-dimensional parent equation directly governs the symmetry properties of its high-dimensional deformations and HD dual subsystems. Our work not only extends the conservation-law deformation conjecture beyond (1 1)-dimensions to accommodate both strong Lax and weak Lax structures, but also provides a universal route to construct reciprocal links for multi-dimensional integrable systems.
toXiv_bot_toot
@maxheadroom@hub.uckermark.social2026-09-03 15:40:39
Morgen Konzert bei uns in der Dorfkirch Groß Dölln. Kommt alles, es wird lustig!
#Uckermark #musik #Konzert
@heiseonline@social.heise.de2026-10-02 10:21:03
Boston Dynamics: Was macht die neue Atlas-Roboterhand besser?
Boston Dynamics will seinen humanoiden Atlas-Roboter fitter für die Arbeitswelt machen. Dafür benötigt der Roboter agilere und geschicktere Hände.
ht…
@netzschleuder@social.skewed.de2026-10-04 00:00:04
sp_infectious: Art exhibit dynamic contacts (2011)
This dataset contains the daily dynamic contact networks collected during the Infectious SocioPatterns event that took place at the Science Gallery in Dublin, Ireland, during the artscience exhibition INFECTIOUS: STAY AWAY. Each file in the downloadable package contains a tab-separated list representing the active contacts during 20-second intervals of one day of data collection. Each line has the form “t i j“, where i and j are the a…
@sncf_ligne_u@lepoulsdumonde.com2026-10-03 01:00:01
Période : samedi toute la journée et dimanche jusqu'Š 15h45.
Dates : les week ends du samedis 03 au dimanche 04, samedi 10 au dimanche 11 et et du samedi 17 au dimanche 18 octobre.
La ligne U est prolongée entre La Verrière et Rambouillet.
Les horaires du calculateur d'itinéraire tiennent compte des travaux.
Motif : travaux sur le réseau ferroviaire.
#Info_Travaux
@heiseonline@social.heise.de2026-09-04 09:40:05
@sncf_ligne_u@lepoulsdumonde.com2026-10-04 01:11:58
Période : samedi toute la journée et dimanche jusqu'Š 15h45.
Dates : les week ends du samedis 03 au dimanche 04, samedi 10 au dimanche 11 et et du samedi 17 au dimanche 18 octobre.
La ligne U est prolongée entre La Verrière et Rambouillet.
Les horaires du calculateur d'itinéraire tiennent compte des travaux.
Motif : travaux sur le réseau ferroviaire.
#Info_Travaux
@heiseonline@social.heise.de2026-09-01 10:33:28
Estland: Behörden setzen auf Quarantäne für E-Mails von .ru-Domains
Viele staatliche Stellen in Estland schicken E-Mails von einer .ru-Domain jetzt in Quarantäne. Das dürfte in der russischsprachigen Minderheit viele treffen.
…
