Results 71 to 80 of about 967,260 (356)
Lie symmetries and CR geometry [PDF]
Journal of Mathematical Sciences, 2008 This paper is divided into three parts. Part I develops a general, new theory (inspired by modern CR geometry) of Lie symmetries of completely integrable pde systems, viewed from their associated submanifolds of solutions. Part II constructs general combinatorial formulas for the prolongations of vector fields to jet spaces.
openaire +3 more sources
On classification of geometries with SO(2,2) symmetry [PDF]
Journal of High Energy Physics, 2014 Motivated by the Extremal Vanishing Horizon (EVH) black holes, their near horizon geometry and the EVH/CFT proposal, we construct and classify solutions with (local) SO(2,2) symmetry to four and five dimensional Einstein-Maxwell-Dilaton (EMD) theory with positive, zero or negative cosmological constant Lambda, the EMD-$ $ theory, and also $U(1)^4 ...
Sadeghian, S. +2 more
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Hexakis(dimethyl sulfoxide-κO)cobalt(III) trinitrate
Acta Crystallographica Section E, 2010 The metal atom of the title salt, [Co(C2H6OS)6](NO3)3, is coordinated by six dimethyl sulfoxide molecules in an octahedral geometry. The metal atom lies on a special position of overline{3} site symmetry.
Qiuhong Li, Seik Weng Ng
doaj +1 more source
Symmetries and conformal bridge in Schwarschild-(A)dS black hole mechanics
Journal of High Energy Physics, 2021 We show that the Schwarzschild-(A)dS black hole mechanics possesses a hidden symmetry under the three-dimensional Poincaré group. This symmetry shows up after having gauge-fixed the diffeomorphism invariance in the symmetry-reduced homogeneous Einstein-Λ
Jibril Ben Achour, Etera R. Livine
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The Quaternions and Bott Periodicity Are Quantum Hamiltonian Reductions [PDF]
, 2016 .
Geometry, Integrability Symmetry
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, 2000 A detailed analysis of the symmetric tetracrystal geometry used in phase-sensitive pairing symmetry experiments on high Tc superconductors is carried out for both bulk and surface time-reversal symmetry-breaking states, such as the d+id' and d+is states.
A.F. Andreev +26 more
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Pseudo-Riemannian structures in Pati-Salam models
Journal of High Energy Physics, 2020 We discuss the role of the pseudo-Riemannian structure of the finite spectral triple for the family of Pati-Salam models. We argue that its existence is a very restrictive condition that separates leptons from quarks, and restricts the whole family of ...
A. Bochniak, T.E. Williams, P. Zalecki
doaj +1 more source
Locally-homogeneous Riemann-Cartan geometries with the largest symmetry group [PDF]
J. Math. Phys. 65, 072502 (2024)The symmetry frame formalism is an effective tool for computing the symmetries of a Riemann-Cartan geometry and, in particular, in metric teleparallel geometries. In the case of non-vanishing torsion in a four dimensional Riemann-Cartan geometry, the Minkowski geometry is the only geometry admitting ten affine frame symmetries. Excluding this geometry,
arxiv +1 more source
FEBS Open Bio, EarlyView.The contrast transfer function (CTF) is an imaging aberration that is a major resolution‐limiting factor in cryo‐electron microscopy (cryo‐EM). Precise CTF estimation is key to overcoming this limitation, but is particularly challenging in cryo‐electron tomography (cryo‐ET) data. Here, we present an approach for using geometric information to assist in
Sagar Khavnekar, William Wan
wiley +1 more source
The Co-Points of Rays are Cut Points of Upper Level Sets for Busemann Functions [PDF]
, 2016 . We show that the co-rays to a ray in a complete non-compact Finsler manifold contain geodesic segments to upper level sets of Busemann functions. Moreover, we characterise the co-point set to a ray as the cut locus of such level sets.
Geometry, Integrability Symmetry
core