Results 51 to 60 of about 36,531 (212)

Arithmetic Spacetime Geometry from String Theory

, 2005
An arithmetic framework to string compactification is described. The approach is exemplified by formulating a strategy that allows to construct geometric compactifications from exactly solvable theories at $c=3$.
Conway J. H., Cox D. A., Doran C., Fontaine J.-M., Goldman J. R., Hasse H., Hasse H., Knapp A., Néron A., Rajan C. S., ROLF SCHIMMRIGK, Schmidt F. K., Shimura G., Tate J., Verrill H.   +14 more
core   +1 more source

Singular Sturm?Liouville problems with nonnegative and indefinite weights

Monatshefte f�r Mathematik, 1984
This article is concerned with the oscillatory properties of the eigenfunctions of a class of singular Sturm-Liouville problems \(- (py')'+qy=\lambda wy\) on (a,b), where the weight function w vanishes on a subinterval of positive measure, or where the weight function w changes sign on (a,b).
Kaper, H.G., Kwong, M.K., Zettl, A.
openaire   +2 more sources

Ultrasound‐Guided Liposomal vs. Conventional Bupivacaine Erector Spinae Plane Block Plus Gabapentin for Postherpetic Neuralgia

The Kaohsiung Journal of Medical Sciences, EarlyView.
ABSTRACT This study aimed to compare efficacy and safety of ultrasound‐guided erector spinae plane block (ESPB) using liposomal (LB) versus conventional bupivacaine (CB), each plus standardized gabapentin, in patients with postherpetic neuralgia (PHN). A total of 116 PHN patients were randomized to ESPB‐LB or ESPB‐CB; both groups received standardized ...
Xia‐Jing Xu, Li‐Juan Liu, Fa‐Ming Xu, Xiang‐Yu Fang   +3 more
wiley   +1 more source

Multiplicity of solutions for gradient systems

Electronic Journal of Differential Equations, 2010
We establish the existence of nontrivial solutions for an elliptic system which is resonant both at the origin and at infinity. The resonance is given by an eigenvalue problem with indefinite weight, and the nonlinear term is permitted to be unbounded.
Edcarlos D. Da Silva
doaj  

Hyperbolic Kac-Moody Algebras and Chaos in Kaluza-Klein Models

, 2001
Some time ago, it was found that the never-ending oscillatory chaotic behaviour discovered by Belinsky, Khalatnikov and Lifshitz (BKL) for the generic solution of the vacuum Einstein equations in the vicinity of a spacelike ("cosmological") singularity ...
Andersson, Belinskii, Belinskii, Belinskii, Belinskii, Belinskii, Berger, Bergshoeff, Bernard Julia, Chamseddine, Chamseddine, Chapline, Cremmer, Cremmer, Damour, Damour, Damour, Demaret, Demaret, Demaret, Elskens, Feingold, Hermann Nicolai, Ivashchuk, Julia, Kac, Kirillov, Lifshitz, Marc Henneaux, Misner, Misner, Mizoguchi, Moody, Nicolai, Piatetsky-Shapiro, Rendall, Ryan, Saçlioğlu, Schröder, Thibault Damour, Vinberg   +40 more
core   +3 more sources

Finite‐Time Disturbance Observer‐Based Nonlinear Robust Adaptive Control of Hydraulic Manipulator With Parameter Identification

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Hydraulic manipulators exhibit strong coupling, pronounced nonlinearities, and significant modeling uncertainties, which hinder high‐precision motion control. This paper proposes a finite‐time disturbance observer–based nonlinear robust adaptive control (RAC‐FTDO) framework enhanced by a physically consistent dynamic parameter identification ...
Tianyu Gao, Xianglong Liang, Wenxiang Deng, Jianyong Yao   +3 more
wiley   +1 more source

Reduced‐Frequency GLP1 Therapy Maintains Weight, Body Composition, and Metabolic Syndrome Improvements: A Case Series

Obesity, EarlyView.
ABSTRACT Objective This study aimed to evaluate whether reduced‐frequency dosing of GLP1 receptor agonists maintains weight loss, body composition, and metabolic syndrome improvements following successful initial treatment with standard weekly therapy. Methods This retrospective case series included 30 adults who achieved weight plateau while on weekly
Michelle Wong, Ash Wu, Pawanjot K. Garhe, Mitch Biermann   +3 more
wiley   +1 more source

Lattice point problems and distribution of values of quadratic forms

, 1999
For d-dimensional irrational ellipsoids E with d >= 9 we show that the number of lattice points in rE is approximated by the volume of rE, as r tends to infinity, up to an error of order o(r^{d-2}). The estimate refines an earlier authors' bound of order
Bentkus, Vidmantas, Götze, Friedrich
core   +2 more sources

Principal eigenvalues for indefinite-weight elliptic problems in 𝑅ⁿ [PDF]

Proceedings of the American Mathematical Society, 1992
We consider the problem − Δ u = λ g u - \Delta u = \lambda gu in R n {R^n} , u → 0 u \to 0 at ∞ \infty with g g a function that changes sign.
openaire   +1 more source

Views from the hill: Deer stalkers' perspectives on land‐use change in the Scottish Highlands

People and Nature, EarlyView.
Abstract Land‐use and wildlife management are changing globally as part of efforts to address contemporary environmental challenges. In the Scottish Highlands, the hunting—or ‘stalking’—of deer has entered a period of considerable flux primarily because of national policy changes to mitigate climate change and biodiversity loss.
Callum Leavey‐Wilson, Janet A. Fisher, Sam Staddon   +2 more
wiley   +1 more source