Results 51 to 60 of about 1,685,988 (224)

Spinorial geometry, horizons and superconformal symmetry in six dimensions [PDF]

open access: yes, 2014
The spinorial geometry method of solving Killing spinor equations is reviewed as it applies to six-dimensional (1,0) supergravity. In particular, it is explained how the method is used to identify both the fractions of supersymmetry preserved by and the ...
Mehmet Akyol, Georgios Papadopoulos
semanticscholar   +1 more source

On the Ubiquity of Symmetry in Logical Geometry

open access: yesSymmetry: Art and Science | 12th SIS-Symmetry Congress, 2022
The research framework of Logical Geometry investigates two major sets of logical rela- tions holding between formulas in a logical fragment or between concepts in a lexical field. On the one hand, there is the classical set of Aristotelian relations of contradiction, (sub)contrariety and subalternation/implication.
Smessaert, Hans, Demey, Lorenz
openaire   +2 more sources

Pressure-induced symmetry changes in body-centred cubic zeolites [PDF]

open access: yesRoyal Society Open Science, 2019
Previous work has shown a strong correlation between zeolite framework flexibility and the nature of structural symmetry and phase transitions. However, there is little experimental data regarding this relationship, in addition to how flexibility can be ...
Antony Nearchou   +6 more
doaj   +1 more source

GEOMETRY AND CRYSTAL SYMMETRY

open access: yesComputers & Mathematics with Applications, 1986
AbstractThe beautiful external forms of crystals are manifestations of their internal structures. These structures, which can be regarded as infinite periodic patterns, are determined by local forces. In this article we discuss symmetry from the “local” point of view.
openaire   +2 more sources

Poisson gauge models and Seiberg-Witten map

open access: yesJournal of High Energy Physics, 2022
The semiclassical limit of full non-commutative gauge theory is known as Poisson gauge theory. In this work we revise the construction of Poisson gauge theory paying attention to the geometric meaning of the structures involved and advance in the ...
V. G. Kupriyanov   +2 more
doaj   +1 more source

Jet-determination of symmetries of parabolic geometries [PDF]

open access: greenMathematische Annalen, 2017
We establish 2-jet determinacy for the symmetry algebra of the underlying structure of any (complex or real) parabolic geometry. At non-flat points, we prove that the symmetry algebra is in fact 1-jet determined. Moreover, we prove 1-jet determinacy at any point for a variety of non-flat parabolic geometries - in particular torsion-free, parabolic ...
Boris Kruglikov, Dennis The
openalex   +8 more sources

Geometry-symmetry-free and material-symmetry-guaranteed polariton-induced transparency

open access: yesiScience
Summary: Plasmon-induced transparency is a classical analogue of electromagnetically induced transparency (EIT). However, its realization and control primarily rely on geometry engineering rather than tuning plasmon polaritons (PPs) themselves, due to ...
Xingyu Tang   +7 more
doaj   +1 more source

Geometric Curvatures of Plane Symmetry Black Hole

open access: yesAdvances in High Energy Physics, 2013
We study the properties and thermodynamic stability of the plane symmetry black hole from the viewpoint of geometry. We find that the Weinhold curvature gives the first-order phase transition at N=1, where N is a parameter of the plane symmetry black ...
Shao-Wen Wei   +3 more
doaj   +1 more source

Symmetry as tactics of solving mathematical problems

open access: yesLietuvos Matematikos Rinkinys, 2012
The article explores symmetry as tactics in solving various mathematical problems. Although in Mathematics curriculum while learning about Geometry, symmetry is taught and simple straightforward exercises are solved, it is argued that the application of ...
Aistė Elijio, Dovilė Malijonytė
doaj   +1 more source

Bis(1-adamantylammonium) tetrachloridocobaltate(II)

open access: yesActa Crystallographica Section E, 2008
The CoII atom in the title salt, (C10H18N)2[CoCl4], exists in a tetrahedral coordination geometry. The asymmetric unit has two cations that lie on different special positions of site symmetry m; the anion lies on another special position of site symmetry
Seik Weng Ng   +3 more
doaj   +1 more source

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