Results 131 to 140 of about 4,323 (217)
Elliptic symbols, elliptic operators and Poincaré duality on conical pseudomanifolds [PDF]
, 2009 24 pagesInternational audienceIn a earlier work of Claire Debord and the author, a notion of noncommutative tangent space isdefined for a conical pseudomanifold and the Poincaré duality in $K$-theory is proved between this space and the pseudomanifold ...
Lescure, Jean-Marie
core
The Two Extremal Rays of Some Hyper–Kähler Fourfolds
Mathematische Nachrichten, Volume 299, Issue 8, Page 2161-2176, August 2026.ABSTRACT We consider projective Hyper–Kähler manifolds of dimension 4 that are deformation equivalent to Hilbert squares of K3 surfaces. In case such a manifold admits a divisorial contraction, the exceptional divisor is a conic bundle over a K3 surface. A classification of lattice embeddings implies that there are five types of such conic bundles.
Federica Galluzzi, Bert van Geemen
wiley +1 more source
Mathematical Methods in the Applied Sciences, Volume 49, Issue 12, Page 13324-13360, August 2026.ABSTRACT This paper proves the existence of nontrivial solution for two classes of quasilinear systems of the type −ΔΦ1u=Fu(x,u,v)+λRu(x,u,v)inΩ−ΔΦ2v=−Fv(x,u,v)−λRv(x,u,v)inΩu=v=0on∂Ω$$ \left\{\begin{array}{l}\hfill -{\Delta}_{\Phi_1}u={F}_u\left(x,u,v\right)+\lambda {R}_u\left(x,u,v\right)\kern0.1832424242424242em \mathrm{in}\kern0.3em \Omega ...
Lucas da Silva, Marco Souto
wiley +1 more source
International Journal for Numerical and Analytical Methods in Geomechanics, Volume 50, Issue 12, Page 4879-4892, 25 August 2026.ABSTRACT This work presents a general framework for deriving the Young–Laplace equation and the Young's equations for an axisymmetric capillary bridge between two parallel plates by minimizing the system's total energy. These Young's equations naturally emerge as boundary conditions associated with the Young–Laplace equation.
Olivier Millet +3 more
wiley +1 more source
Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 4, August 2026.Abstract The Potential Field Source Surface (PFSS) extrapolation is a method for estimating the large scale coronal magnetic field from photospheric magnetograms. The source surface serves as the outer boundary of its solution domain, and is typically a spherical surface.
Shiouhe Wang +4 more
wiley +1 more source
Gauge theory on ρ-Minkowski space-time
Journal of High Energy PhysicsWe construct a gauge theory model on the 4-dimensional ρ-Minkowski space-time, a particular deformation of the Minkowski space-time recently considered. The corresponding star product results from a combination of Weyl quantization map and properties of ...
Valentine Maris, Jean-Christophe Wallet
doaj +1 more source
Addiction Biology, Volume 31, Issue 8, August 2026.This study sought to characterize the biosignatures of craving through the measurement of heart rate variability (HRV) using a combination of ambulatory electrocardiogram (ECG) monitoring and ecological momentary assessment (EMA) in individuals in the first year of a current AUD recovery attempt (N = 40, observations = 400).
Sara Mei, Noah N. Emery, David Eddie
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European Journal of Clinical Investigation, Volume 56, Issue 8, August 2026.Is heart rate variability today where electrocardiography was a century ago? Many of the barriers currently limiting the clinical adoption of HRV—technological complexity, lack of standardization, limited clinician training and interpretative uncertainty—closely resemble those encountered during the early years of the ECG.
José Luis Puglisi +3 more
wiley +1 more source
Succinct representation of the Poincare map for periodically driven differential equations [PDF]
, 1998 A differential equation, periodically driven with period T, defines the time evolution of the solution, a state vector x(t). The Poincaré, or time one, map is a function that relates to x(t + T)to x(t).
Jefferies, David J. +1 more
core
Mitigating Black Pod Disease in Cocoa Plants: An Optimal Control and Cost‐Effectiveness Analysis
Natural Resource Modeling, Volume 39, Issue 3, August 2026.ABSTRACT Black pod disease (BPD), caused by Phytophthora species, continues to pose a significant threat to cocoa production, particularly in tropical regions where cocoa farming is a major economic activity. This study develops a deterministic compartmental model to understand the transmission dynamics of BPD and evaluate the impact of multiple ...
Bernard Asamoah Afful
wiley +1 more source