Results 141 to 150 of about 205,279 (307)

Qoolchain: A QUBO Preprocessing Toolchain for Enhancing Quantum Optimization

open access: yesAdvanced Quantum Technologies, EarlyView.
This study introduces Qoolchain, a QUBO preprocessing toolchain developed in Cython to reduce problem size and enhance optimization solvers' performance, particularly for Grover Adaptive Search (GAS). Qoolchain includes persistency identification, decomposition, and probing to estimate function bounds, all with polynomial complexity and applies Grover ...
Giacomo Orlandi   +3 more
wiley   +1 more source

Automophisms of Nil-Triangular Subrings of Algebras Chevalley Type $G_2$ Over Integral Domain. I

open access: yesИзвестия Иркутского государственного университета: Серия "Математика"
Let $N\Phi(K)$ be the nil-triangular subalgebra of the Chevalley algebra over an associative commutative ring $K$ with the identity associated with a root system $\Phi$.
A. V. Kazakova
doaj   +1 more source

Efficient Simulation of Open Quantum Systems on NISQ Trapped‐Ion Hardware

open access: yesAdvanced Quantum Technologies, EarlyView.
Open quantum systems exhibit rich dynamics that can be simulated efficiently on quantum computers, allowing us to learn more about their behavior. This work applies a new method to simulate certain open quantum systems on noisy trapped‐ion quantum hardware.
Colin Burdine   +3 more
wiley   +1 more source

Gradings on the algebra of triangular matrices as a Lie algebra: Revisited

open access: yesJournal of Algebra
We investigate the group gradings on the algebra of upper triangular matrices over an arbitrary field, viewed as a Lie algebra. These results were obtained a few years early by the same authors. We provide streamlined proofs, and present a complete classification of isomorphism classes of the gradings.
Plamen Koshlukov   +1 more
openaire   +2 more sources

The role of identification in data‐driven policy iteration: A system theoretic study

open access: yesInternational Journal of Robust and Nonlinear Control, EarlyView.
Abstract The goal of this article is to study fundamental mechanisms behind so‐called indirect and direct data‐driven control for unknown systems. Specifically, we consider policy iteration applied to the linear quadratic regulator problem. Two iterative procedures, where data collected from the system are repeatedly used to compute new estimates of ...
Bowen Song, Andrea Iannelli
wiley   +1 more source

Nonlinear Jordan Derivations of Triangular Algebras [PDF]

open access: yesarXiv, 2012
In this paper we prove that any nonlinear Jordan derivation on triangular algebras is an additive derivation. As a byproduct, we obtain that any nonlinear Jordan derivation on nest algebras over infinite dimensional Hilbert spaces is inner.
arxiv  

Towards a Semiautonomous Young Spruce Forest Late Cleaning

open access: yesJournal of Field Robotics, EarlyView.
ABSTRACT Cleaning a seedling spruce stand is an important silvicultural task required to help the young spruce trees thrive. It is usually manual work with a clearing saw. Mechanized solutions have been proposed, but they have not worked out well, since the driver has challenges in seeing the seedling trees that should be left growing.
Issouf Ouattara   +3 more
wiley   +1 more source

Derived equivalences between triangular matrix algebras [PDF]

open access: yesarXiv, 2013
In this paper we study derived equivalences between triangular matrix algebras using certain classical recollements. We show that special properties of these recollements actually characterize triangular matrix algebras, and describe methods to construct tilting modules and tilting complexes inducing derived equivalences between them.
arxiv  

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