Results 31 to 40 of about 99,297 (282)

The natural operators of general affine connections into general affine connections

open access: yesAnnales Universitatis Mariae Curie-Sklodowska, sectio A – Mathematica, 2017
We reduce the problem of describing all \(\mathcal{M} f_m\)-natural operators  transforming general affine connections on \(m\)-manifolds into general affine ones to the known description of all \(GL(\mathbf{R}^m)\)-invariant maps \(\mathbf{R}^{m*}\otimes \mathbf{R}^m\to \otimes^k\mathbf{R}^{m*}\otimes\otimes ^k\mathbf{R}^m\) for \(k=1,3\).
Kurek, Jan, Mikulski, Włodzimierz M.
openaire   +3 more sources

A Class of Affinely Connected Spaces [PDF]

open access: yesTransactions of the American Mathematical Society, 1955
Publisher Summary This chapter presents the detailed study of the symmetric affinely connected spaces Ԅn. All the possible curvature tensors of Ԅn as well as the isotropic subgroup of G are determined. In case G is transitive, all the simply connected Ԅn's are explicit. They fall into three individual cases and two classes depending on a non-negative
Wang, Hsien-Chung, Yano, Kentaro
openaire   +1 more source

Affine and degenerate affine BMW algebras: Actions on tensor space

open access: yes, 2012
The affine and degenerate affine Birman-Murakami-Wenzl (BMW) algebras arise naturally in the context of Schur-Weyl duality for orthogonal and symplectic quantum groups and Lie algebras, respectively.
Daugherty, Zajj, Ram, Arun, Virk, Rahbar
core   +1 more source

Emergent gravity, violated relativity and dark matter

open access: yes, 2014
The nonlinear affine Goldstone model of the emergent gravity, built on the nonlinearly realized/hidden affine symmetry, is concisely revisited. Beyond General Relativity, the explicit violation of general invariance/relativity, under preserving general ...
Pirogov, Yu. F.
core   +1 more source

Function‐driven design of a surrogate interleukin‐2 receptor ligand

open access: yesFEBS Letters, EarlyView.
Interleukin (IL)‐2 signaling can be achieved and precisely fine‐tuned through the affinity, distance, and orientation of the heterodimeric receptors with their ligands. We designed a biased IL‐2 surrogate ligand that selectively promotes effector T and natural killer cell activation and differentiation. Interleukin (IL) receptors play a pivotal role in
Ziwei Tang   +9 more
wiley   +1 more source

Affine transformations of the tangent bundle of a common path space

open access: yesДифференциальная геометрия многообразий фигур, 2023
In this paper, we study infinitesimal transformations of the tangent bundle of a common path space. The general path space is a genera­liza­tion space of the affine connectivity.
N. D. Nikitin, O. G. Nikitina
doaj   +1 more source

Ambient connections realising conformal Tractor holonomy

open access: yes, 2006
For a conformal manifold we introduce the notion of an ambient connection, an affine connection on an ambient manifold of the conformal manifold, possibly with torsion, and with conditions relating it to the conformal structure.
A Čap   +10 more
core   +3 more sources

Structural biology of ferritin nanocages

open access: yesFEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

ODE/IM correspondence and Bethe ansatz for affine Toda field equations

open access: yesNuclear Physics B, 2015
We study the linear problem associated with modified affine Toda field equation for the Langlands dual gˆ∨, where gˆ is an untwisted affine Lie algebra.
Katsushi Ito, Christopher Locke
doaj   +1 more source

Conditions to Flatten the Curvature Tensor Associated with a Symmetric Affine Connection

open access: yesJournal of Mathematics, 2022
In this study, we present a problem that consists in flattening the curvature associated with an affine connection on ℝ2. This problem involves distributions and symmetric affine connections defined on a differential manifold M.
Esperanza Cuellar   +2 more
doaj   +1 more source

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