Results 101 to 110 of about 5,588,991 (291)

Kochen-Specker theorem for von Neumann algebras [PDF]

open access: yes, 2005
The Kochen-Specker theorem has been discussed intensely ever since its original proof in 1967. It is one of the central no-go theorems of quantum theory, showing the non-existence of a certain kind of hidden states models. In this paper, we first offer a
Döring, Andreas
core  

On the history of the isomorphism problem of dynamical systems with special regard to von Neumann's contribution [PDF]

open access: yes, 2011
This paper reviews some major episodes in the history of the spatial isomorphism problem of dynamical systems theory (ergodic theory). In particular, by analysing, both systematically and in historical context, a hitherto unpublished letter written in ...
Werndl, Charlotte   +3 more
core   +1 more source

Gate‐Tunable Polarity‐Reconfigurable Photovoltaic Response With Dual Linearity in NbS3/WSe2 Heterostructures for In‐Sensor Image Processing

open access: yesAdvanced Science, EarlyView.
An NbS3/WSe2 van der Waals heterostructure realizes a continuously gate‐tunable self‐powered photovoltaic response through interfacial band‐alignment modulation and reversible built‐in electric‐field switching. The short‐circuit photocurrent scales linearly with incident power density, while short‐circuit photoresponsivity varies linearly with gate ...
Jidong Liu   +9 more
wiley   +1 more source

Finite-resolution limits on quantum uniqueness

open access: yesPhysics Letters B
The Stone-von Neumann theorem makes canonical quantization unique only after one imposes strong continuity of the Weyl translation groups. We show that this continuity assumption cannot be certified by any finite-resolution interrogation of the Weyl ...
Seramika Ariwahjoedi   +2 more
doaj   +1 more source

Irrational behavior in the Brown-von Neumann-Nash dynamics [PDF]

open access: yes
We present a class of games with a pure strategy being strictly dominated by another pure strategy such that the former survives along most solutions of the Brown-von Neumann-Nash dynamics.Nash map, BNN dynamics, Dominated ...
Ulrich Berger, Josef Hofbauer
core  

Probabilistic Computing via Gate‐Tunable Random Telegraph Noise

open access: yesAdvanced Science, EarlyView.
Intrinsic random telegraph noise in metal–oxide–semiconductor field‐effect transistors is harnessed to create gate‐tunable probabilistic bits. By modulating carrier‐trapping dynamics, the device produces stochastic binary outputs with a continuous bias‐to‐probability transfer.
Gyungwon Yun   +8 more
wiley   +1 more source

Multi‐Modal Low‐Power Adaptive Braille Recognition System Based on Hf0.3Zr0.7O2 Memristor

open access: yesAdvanced Science, EarlyView.
A multimodal adaptive perception system based on HZO ferroelectric memristor realizes efficient Braille digit recognition via reservoir computing. It delivers high recognition accuracy with ultralow‑energy analog computation, offering a promising hardware solution for environment‑robust neuromorphic assistive devices for visually impaired users ...
Jikang Xu   +9 more
wiley   +1 more source

On the locally functionally countable subalgebra of C(X) on locally functionally countable subalgebra of C(X)

open access: yesApplied General Topology, 2015
Let $C_c(X)=\{f\in C(X) : |f(X)|\leq \aleph_0\}$, $C^F(X)=\{f\in C(X): |f(X)|
O. A. S. Karamzadeh   +2 more
doaj   +1 more source

On von Neumann regular rings with an automorphism

open access: yesJournal of Algebra, 2007
Difference fields enjoy a nice model theory; for instance, their existentially closed models get an elegant axiomatization through ACFA and provide a typical example of structures with a simple theory. Furthermore every difference ring of sequences \(F^{\mathbb Z}\) for \(F\) a finite field, with the shift automorphism \(\sigma_t ((c_i)_{i \in {\mathbb
Hrushovski, Ehud, Point, Françoise
openaire   +2 more sources

Solution‐Processed Multi‐Junction Optoelectronic Synapses for Mode‐Switchable SWIR Neuromorphic Vision Sensing

open access: yesAdvanced Science, EarlyView.
A novel bias‐programmable shortwave infrared (SWIR) vision sensor is developed using multi‐junction colloidal quantum dots (QDs). Under varying applied voltage, the back‐to‐back rectifying junctions effectively tune trapping centers to switch the device between high‐speed photodetector and persistent synapse modes.
Zhuoyang He   +6 more
wiley   +1 more source

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