Results 61 to 70 of about 1,717,424 (325)

Symmetry notion as a universal principle of design [PDF]

Arhitektura i Urbanizam, 2008
Symmetry is a word that appears in a variety of disciplines over a variety of ages, carries many meanings and has always been in direct relation to the most important notions which explain architectural creativity.
Jadrešin-Milić Renata
doaj  

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

Mathematical Geometry and Groups for Low-Symmetry Metal Complex Systems

Molecules, 2023
Since chemistry, materials science, and crystallography deal with three-dimensional structures, they use mathematics such as geometry and symmetry. In recent years, the application of topology and mathematics to material design has yielded remarkable ...
Takashiro Akitsu
doaj   +1 more source

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

, 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

Time after time – circadian clocks through the lens of oscillator theory

FEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo, Carolin Ector, Hanspeter Herzel   +2 more
wiley   +1 more source

On the coupling of Galilean-invariant field theories to curved spacetime

SciPost Physics, 2018
We consider the problem of coupling Galilean-invariant quantum field theories to a fixed spacetime. We propose that to do so, one couples to Newton-Cartan geometry and in addition imposes a one-form shift symmetry.
Kristan Jensen
doaj   +1 more source

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

Symmetries in Riemann-Cartan Geometries

Symmetry, Integrability and Geometry: Methods and Applications
Riemann-Cartan geometries are geometries that admit non-zero curvature and torsion tensors. These geometries have been investigated as geometric frameworks for potential theories in physics including quantum gravity theories and have many important differences when compared to Riemannian geometries.
McNutt, David D., Coley, Alan A., van den Hoogen, Robert J.   +2 more
openaire   +2 more sources

Molecular determinants of signal transduction in tropomyosin receptor kinases

FEBS Open Bio, EarlyView.
Tropomyosin receptor kinases control critical neuronal functions, but how do the same receptors produce diverse cellular responses? This review explores the structural mechanisms behind Trk signaling diversity, focusing on allosteric modulation and ligand bias.
Giray Enkavi
wiley   +1 more source

Quantum gravity from Weyl conformal geometry

European Physical Journal C: Particles and Fields
We review recent developments in physical implications of Weyl conformal geometry. The associated Weyl quadratic gravity action is a gauge theory of the Weyl group of dilatations and Poincaré symmetry.
D. M. Ghilencea
doaj   +1 more source