Results 21 to 30 of about 5,386,839 (143)
On certain groups with Chernikov group of automorphisms
Researches in Mathematics, 2014 We obtained automorphic analogue of Schur’s theorem for the case when an arbitrary subgroup A of automorphism group Aut(G) of a group G and the factor-group of a group G modulo A-center are Chernikov groups.
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Single Crystals of Perylene Diimide‐Based Two‐Dimensional Covalent Organic Frameworks
Advanced Materials, Volume 38, Issue 36, 26 June 2026.Synthesizing extended crystals of two‐dimensional covalent organic frameworks (2D COFs) has remained a major challenge. Here, we report a high‐temperature double‐modulator strategy that provides access to new perylene diimide (PDI)‐based COFs with crystal sizes of up to 50 µm.
Ling Zhang +12 more
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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.
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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
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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 +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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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 +9 more
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Finiteness properties of profinite groups [PDF]
, 2010 PhDBroadly speaking, a finiteness property of groups is any generalisation of the property of having finite order. A large part of infinite group theory is concerned with finiteness properties and the relationships between them. Profinite groups are an
Reid, Colin David
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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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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 +7 more
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