Results 41 to 50 of about 9,034,965 (157)

Groups with all Subgroups Subnormal or Nilpotent-by-Chernikov

Rendiconti del Seminario Matematico della Università di Padova, 2011
An important result by \textit{W. Möhres} [Arch. Math. 54, No. 3, 232-235 (1990; Zbl 0663.20027)] shows that any group in which all subgroups are subnormal is soluble. Using this theorem, \textit{H. Smith} [Topics in infinite groups. Rome: Aracne. Quad. Mat.
openaire   +3 more sources

Coordinate‐ and Spacetime‐Independent Quantum Physics

Annalen der Physik, Volume 538, Issue 1, January 2026.
This article studies in the framework of quantum field theory in curved spacetime, if there exists a single zero‐rank‐tensor solution of a Klein‐Gordon PDE, being valid at once for the depicted spacetimes. The answer is shown to be affirmative, even for a class of such solutions having the standard applications in particle physics. ABSTRACT The concept
Viacheslav A. Emelyanov, Daniel Robertz
wiley   +1 more source

Dispersion‐compensated Rowland spectrometer: implications for uranium VB‐RIXS

Journal of Synchrotron Radiation, Volume 33, Issue 1, Page 218-226, January 2026.
A valence‐band resonant inelastic X‐ray scattering instrument, operating in the tender X‐ray range, uses an incoming beam with a linear energy dispersion to reach the intrinsic resolution of the Rowland spectrometer. Such a scheme is insensitive to the incident bandwidth and therefore preserves count‐rates despite the higher resolution.The total energy
Martin Sundermann, Manuel Harder, Ayman H. Said, Bernhard Keimer, Hlynur Gretarsson   +4 more
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Indiscernibles in monadically NIP theories

Bulletin of the London Mathematical Society, Volume 57, Issue 11, Page 3326-3345, November 2025.
Abstract We prove various results around indiscernibles in monadically NIP theories. First, we provide several characterizations of monadic NIP in terms of indiscernibles, mirroring previous characterizations in terms of the behavior of finite satisfiability. Second, we study (monadic) distality in hereditary classes and complete theories.
Samuel Braunfeld, Michael C. Laskowski
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Narrow‐Linewidth Emission and Weak Exciton‐Phonon Coupling in 2D Layered Germanium Halide Perovskites

Advanced Materials, Volume 37, Issue 27, July 10, 2025.
The structural and photophysical properties of the 2D layered metal halides (4F‐PMA)2GeI4 and (4F‐PMA)2PbI4 are reported. For the Ge composition, reduced exciton‐phonon coupling is found and the absence of bound‐exciton emission, present for the Pb composition.
Zachary A. VanOrman, Benjamin Savinson, Tejas Deshpande, Isaiah W. Gilley, Rosario Scopelliti, Antti‐Pekka M. Reponen, Mercouri G. Kanatzidis, Edward H. Sargent, Oleksandr Voznyy, Sascha Feldmann   +9 more
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On locally soluble periodic groups with Chernikov centralizer of a four-subgroup [PDF]

Proceedings of the Edinburgh Mathematical Society, 1994
Let G be a locally soluble periodic group having a four-subgroup V. We show that if CG(V) is Chernikov then G is hyperabelian-by-Chernikov, if CG(V) is finite then G is hyperabelian.
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Dispersive X‐ray absorption spectroscopy using independent grazing‐incidence focusing and convexly bent Bragg‐crystal dispersing optics

Journal of Synchrotron Radiation, Volume 32, Issue 4, Page 1068-1084, July 2025.
A dispersive X‐ray absorption spectroscopy instrument has been developed and implemented at the Advanced Photon Source's Advanced Spectroscopy Beamline. The instrument uses a convexly bent Bragg‐crystal analyzer to disperse a polychromatic X‐ray beam and independent Kirkpatrick–Baez mirrors for focusing, thereby providing a simple and flexible method ...
Juanjuan Huang, Adam P. Tornheim, Xianbo Shi, Mark Wolfman, Yanna Chen, Steve M. Heald, Shelly D. Kelly, George E. Sterbinsky   +7 more
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Oxidative Assemblies of Flavonoids (Quercetin, Morin) to Form Dimer in Weak Base Circumstances and Its Mechanism Analysis by UPLC‐ESI‐TSQ‐MS/MS

Food Chemistry International, Volume 1, Issue 2, Page 167-182, June 2025.
Product identification of flavonoids under weak base conditions and mechanism analysis of dimer formation by the oxidative assembly of quercetin and morin, respectively. ABSTRACT Flavonoids are susceptible to autoxidation in aqueous solutions, which is largely dependent on pH, generating various free radicals and oxidation products. Quercetin and morin
Pengren Zou, Susan Jyakhwo, Paz Otero, Shengxiong Chen, Celia Costas, Carla Cameselle, Fan Zhang, Hui Cao   +7 more
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Exciton Diffusion in Two‐dimentional Chiral Perovskites

Advanced Optical Materials, Volume 13, Issue 11, April 14, 2025.
Transport of light‐emitting excitons is demonstrated in 2D chiral perovskites via transient optical microscopy. The excitons are found to diffuse rapidly after the excitation followed by localization at longer time‐scales. Temperature‐dependent exciton propagation combined with photothermal deflection spectroscopy measurements reveal the role of ...
Sophia Terres, Lucas Scalon, Julius Brunner, Dominik Horneber, Johannes Düreth, Shiyu Huang, Takashi Taniguchi, Kenji Watanabe, Ana Flávia Nogueira, Sven Höfling, Sebastian Klembt, Yana Vaynzof, Alexey Chernikov   +12 more
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The Yenisei Makes the Weather: The Microclimate of the Krasnoyarsk Dam and Its Research, 1960s–1990s

The Russian Review, Volume 84, Issue 2, Page 249-266, April 2025.
Abstract When Soviet authorities began building the Krasnoyarsk Dam in 1956, the Yenisei River had an ice‐free period of only 112 days a year. The thick and long‐lasting ice impeded dam building and navigation. However, as the dam rose, it produced an environmental anomaly; for more than 200 kilometers downstream, the Yenisei became ice‐free year‐round.
Mariia Koskina
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