Results 31 to 40 of about 1,035 (266)

Sphere and projective space of a C*-algebra with a faithful state

open access: yesDemonstratio Mathematica, 2019
Let š’œ be a unital C*-algebra with a faithful state Ļ•. We study the geometry of the unit sphere š•ŠĻ• = {x ∈ š’œ : Ļ•(x*x) = 1} and the projective space ℙϕ = š•ŠĻ•/š•‹.
Antunez Andrea C.
doaj   +1 more source

Projectable Lie algebras of vector fields in 3D [PDF]

open access: yesJournal of Geometry and Physics, 2018
Starting with Lie's classification of finite-dimensional transitive Lie algebras of vector fields on $\mathbb C^2$ we construct Lie algebras of vector fields on the bundle $\mathbb C^2 \times \mathbb C$ by lifting the Lie algebras from the base. There are essentially three types of transitive lifts and we compute all of them for the Lie algebras from ...
openaire   +4 more sources

Rational homotopy type and nilpotency of mapping spaces between Quaternionic projective spaces

open access: yesPracƬ Mìžnarodnogo Geometričnogo Centru
The rational homotopy type of a mapping space is a way to describe the structure of the space using the algebra of its homotopy groups and the differential graded algebra of its cochains.
Tilahun Abebaw   +2 more
doaj   +1 more source

Applications of Mutations in the Derived Categories of Weighted Projective Lines to Lie and Quantum Algebras [PDF]

open access: yesInternational Mathematics Research Notices, 2018
Abstract Let $\textrm{coh}\ \mathbb{X}$ be the category of coherent sheaves over a weighted projective line $\mathbb{X}$ and let $D^b(\textrm{coh}\ \mathbb{X})$ be its bounded derived category. The present paper focuses on the study of the right and left mutation functors arising in $D^b(\textrm{coh}\ \mathbb{X})$ attached to certain ...
Deng, Bangming, Ruan, Shiquan, Xiao, Jie
openaire   +2 more sources

A State‐Adaptive Koopman Control Framework for Real‐Time Deformable Tool Manipulation in Robotic Environmental Swabbing

open access: yesAdvanced Robotics Research, EarlyView.
This work presents a state‐adaptive Koopman linear quadratic regulator framework for real‐time manipulation of a deformable swab tool in robotic environmental sampling. By combining Koopman linearization, tactile sensing, and centroid‐based force regulation, the system maintains stable contact forces and high coverage across flat and inclined surfaces.
Siavash Mahmoudi   +2 more
wiley   +1 more source

Traction Force Microscopy for Viscoelastic Substrates: A Semi‐Analytical Method

open access: yesAdvanced Science, EarlyView.
A semi‐analytical viscoelastic traction force microscopy framework is introduced for quantifying time‐resolved cell tractions on flat finite‐thickness substrates. The method generalizes elastic traction force microscopy to Generalized Maxwell materials, identifies when elastic approximations remain valid and, when they do not, shows that inferred ...
AdriĆ  Villacrosa‐Ribas   +10 more
wiley   +1 more source

Orthogonal projection onto the free Lie algebra

open access: yesTheoretical Computer Science, 1991
Let \(X\) be an alphabet and \(k\) be a field of characteristic zero. Denote by \(M(X)\), \(L(X)\) and \(A(X)\), respectively, the free monoid, the free Lie algebra and the free associative algebra over \(X\). The author answers a question of Garsia regarding the form of the projection which is orthogonal for the only bilinear form \((\cdot|\cdot)_x ...
openaire   +1 more source

Ultra‐Wide‐Field Noninvasive Imaging Through Scattering Media Via Physics‐Guided Deep Learning

open access: yesAdvanced Science, EarlyView.
We propose a physics‐guided adaptive dual‐domain learning method for ultra‐wide‐field noninvasive imaging through scattering media, namely UNI‐Net. Our method not only reduces the requirement for real experimental data by an order of magnitude but also enables clear imaging of complex scenes with an ultra‐large field of view, which is 164 times the OME
Lintao Peng   +5 more
wiley   +1 more source

A note on the restricted universal enveloping algebra of a restricted Lie-Rinehart Algebra

open access: yes, 2016
International audienceLie-Rinehart algebras, also known as Lie algebroids, give rise to Hopf algebroids by a universal enveloping algebra construction, much as the universal enveloping algebra of an ordinary Lie algebra gives a Hopf algebra, of infinite ...
Schauenburg, Peter
core   +1 more source

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