Results 51 to 60 of about 803 (177)

Aggregation and the Structure of Value

Noûs, EarlyView.
ABSTRACT Roughly, the view I call “Additivism” sums up value across time and people. Given some standard assumptions, I show that Additivism follows from two principles. The first says that how lives align in time cannot, in itself, matter. The second says, roughly, that a world cannot be better unless it is better within some period or another.
Weng Kin San
wiley   +1 more source

Weak, Strong and Mixed Extensions of Relations to Spaces of Ultrafilters

Mathematical Logic Quarterly, Volume 72, Issue 3, August 2026.
ABSTRACT The use of nonstandard methods to characterize properties of weak, strong and mixed extensions of congruences to ultrafilters has been the main topic of several recent papers, focused mostly on congruences and divisions. We show that similar methods can be used to extend these characterizations to arbitrary relations and their interplay.
Leonardo Raffaello Maximilian Gasparro, Lorenzo Luperi Baglini   +1 more
wiley   +1 more source

Implicitly extrapolated geometric multigrid on disk-like domains for the gyrokinetic Poisson equation from fusion plasma applications [PDF]

, 2020
In the context of Tokamak fusion plasma, the gyrokinetic Poisson equation has to be solved on disk-like domains which correspond to the poloidal cross-section of the Tokamak geometry.
Rüde, Ulrich, Kühn, Martin Joachim, Kruse, Carola   +2 more
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A Multiple Imputation Approach to Distinguish Curative From Life‐Prolonging Effects in the Presence of Missing Covariates

Biometrical Journal, Volume 68, Issue 3, June 2026.
ABSTRACT Medical advances have increased cancer survival rates and the possibility of finding a cure. Hence, it is crucial to evaluate the impact of treatments both in terms of cure and prolongation of survival. To achieve this, we may use a Cox proportional hazards cure model.
Marta Cipriani, Marta Fiocco, Marco Alfò, Maria Quelhas, Eni Musta   +4 more
wiley   +1 more source

OpenCL‐based implementation of an unstructured edge‐based finite element convection‐diffusion solver on graphics hardware [PDF]

, 2012
The solution of problems in computational fluid dynamics (CFD) represents a classical field for the application of advanced numerical methods. Many different approaches were developed over the years to address CFD applications.
Mossaiby, F., Dadvand, P, Rossi, Riccardo, Idelsohn, Sergio   +3 more
core  

Functional data analysis in the Banach space of continuous functions [PDF]

, 2017
Functional data analysis is typically conducted within the L2-Hilbert space framework. There is by now a fully developed statistical toolbox allowing for the principled application of the functional data machinery to real-world problems, often based on ...
Dette, Holger, Kokot, Kevin, Aue, Alexander   +2 more
core   +1 more source

Zero-pairing limit of Hartree-Fock-Bogoliubov reference states [PDF]

, 2020
International audienceBackground: The variational Hartree-Fock-Bogoliubov (HFB) mean-field theory is the starting point of various (ab initio) many-body methods dedicated to superfluid systems.
Duguet, Thomas, Duguet, T., Bally, B., Tichai, A., Bally, Benajamin   +4 more
core   +1 more source

A nonstandard finite difference scheme for an SEIQR epidemiological PDE model

Applied Mathematics and Computation
This paper introduces a nonstandard finite difference (NSFD) approach to a reaction-diffusion SEIQR epidemiological model, which captures the spatiotemporal dynamics of infectious disease transmission. Formulated as a system of semilinear parabolic partial differential equations (PDEs), the model extends classical compartmental models by incorporating ...
Achraf Zinihi, Matthias Ehrhardt 0001, Moulay Rchid Sidi Ammi   +2 more
openaire   +2 more sources

A nonstandard finite difference scheme for a nonlinear Black–Scholes equation

Mathematical and Computer Modelling, 2013
Abstract In this paper we construct a numerical method based on a nonstandard finite difference scheme to solve numerically a nonlinear Black–Scholes equation modeling illiquid markets. In particular, the proposed method uses an exact difference scheme in the linear convection–reaction term and the spatial derivative is approximated using a ...
Abraham J. Arenas, Gilberto González-Parra, Blas Melendez Caraballo   +2 more
openaire   +1 more source

Embeddability properties of difference sets [PDF]

, 2014
By using nonstandard analysis, we prove embeddability properties of differences A − B of sets of integers. (A set A is “embeddable” into B if every finite configuration of A has shifted copies in B.) As corollaries of our main theorem, we obtain ...
DI NASSO, MAURO
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