Results 81 to 90 of about 5,939,804 (240)

Semisimple weakly symmetric pseudo-Riemannian manifolds [PDF]

open access: yes, 2018
We develop the classification of weakly symmetric pseudo-Riemannian manifolds G / H where G is a semisimple Lie group and H is a reductive subgroup.
Chen, Zhiqi, Wolf, Joseph A
core   +1 more source

Memristive‐Gated RC‐Delay Synaptic Transistors for Time‐Encoded Analog in‐Memory Computing

open access: yesAdvanced Functional Materials, EarlyView.
A Memristive‐Gated Transistor for Time‐Encoded Analog In‐Memory Computing — By exploiting the RC delay of a self‐rectifying interface‐type memristor, nonlinear I–V distortion is structurally bypassed, enabling 3‐bit nonvolatile memory, spike‐timing‐based analog encoding, and hardware‐calibrated reservoir‐computing validation within a unified device ...
Yun‐Seo Shin   +7 more
wiley   +1 more source

Weakly cyclic Ricci symmetric manifolds admitting semi-symmetric metric connection

open access: yes, 2011
In this paper the definition of weakly cyclic Ricci symmetric manifolds admitting semi-symmetric metric connection is given and its applications to the general relativity and cosmology are investigated.
Das, Lovejoy S. K.   +2 more
core   +1 more source

Bone‐Inspired Recyclable Composites for Damage‐Tolerant Circular Materials

open access: yesAdvanced Functional Materials, EarlyView.
Bone‐inspired architected composites are developed by combining osteon‐like reinforcements with a recyclable Elium thermoplastic matrix. The hierarchical architecture redirects cracks and promotes energy dissipation, while enabling recovery of intact, aligned, load‐bearing reinforcement units that retain their original stiffness, revealing a route ...
Alessandro Stagni   +4 more
wiley   +1 more source

On weakly cyclic Z symmetric manifolds

open access: yes, 2015
The object of the present paper is to study weakly cyclic Z symmetric manifolds. Some geometric properties have been studied. We obtain a sufficient condition for a weakly cyclic Z symmetric manifold to be a quasi Einstein manifold.
C. A. Mantica, Y. J. Suh, U. C. De
core   +1 more source

Symplectic duality of Symmetric Spaces [PDF]

open access: yes, 2008
We show that between symmetric spaces of different types there exists a bi-symplectic map.
Loi, Andrea   +3 more
core   +1 more source

Bio‐Inspired Artificial Ionic Mechanoreceptor

open access: yesAdvanced Functional Materials, EarlyView.
A skin‐inspired artificial mechanoreceptor based on ionic interactions is presented for biomimetic tactile sensing. Pressure‐driven ionic redistribution within microfluidic channels generates a self‐powered electrical signal without external bias. The generated waveform exhibits mechanoreceptor‐like temporal features, including overshoot and undershoot,
Mohammad Akbari   +4 more
wiley   +1 more source

Kinetics‐Controlled Architecture of Binder‐Free Organic Electrodes for Enhanced Ion Transport

open access: yesAdvanced Functional Materials, EarlyView.
Pulse reverse electrodeposition controls nucleation and growth to create hierarchically porous Py‐derived oligomeric electrodes with enhanced ionic accessibility and reduced transport resistance. The resulting binder‐free architectures translate these transport advantages into practical sodium‐storage functionality.
Satendra Kumar   +1 more
wiley   +1 more source

Sobre los continuos tipo θ y θn

open access: yesRevista Integración, 2015
En 1974 el Profesor R. W. FitzGerald definió los continuos tipo θ y θn. (Un continuo X es un continuo tipo θ (tipo θn, para algún número natural n) si para cada subcontinuo K de X, resulta que X \ K sólo tiene un número finito de componentes (X \ K ...
Sergio Macías
doaj  

Geodesic orbit and weakly symmetric spray manifolds [PDF]

open access: yes
In this paper, we introduce the geodesic orbit and weakly symmetric properties in homogeneous spray geometry. When a homogeneous spray manifold is endowed with a reductive decomposition, we use the spray vector field to describe these properties, and ...
Xu, Xiyun, Xu, Ming
core   +1 more source

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