Results 181 to 190 of about 1,959,412 (322)

Intertwining Operators Beyond the Stark Effect. [PDF]

Commun Math Phys
Fanelli L, Su X, Wang Y, Zhang J, Zheng J.   +4 more
europepmc   +1 more source

Shape Derivatives of the Eigenvalues of the de Rham Complex for Lipschitz Deformations and Variable Coefficients: Part II

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT In this second part of our series of papers, we develop an abstract framework suitable for de Rham complexes that depend on a parameter belonging to an arbitrary Banach space. Our primary focus is on spectral perturbation problems and the differentiability of eigenvalues with respect to perturbations of the involved parameters. As a byproduct,
Pier Domenico Lamberti, Dirk Pauly, Michele Zaccaron   +2 more
wiley   +1 more source

New, Shorter Small-Sample Intervals for Vaccine Efficacy. [PDF]

Pharm Stat
Gasparini M, Trani VD, Ratta M.
europepmc   +1 more source

Asymptotic formulae of generalized Chebyshev functions

, 1996
Let \(G_2\) denote the set of squares of integers and let \(Q_r\) (\(r\)-integer) be the set of \(r\)-free numbers \((Q_1= \{1\})\). Moreover, for a fixed \(r,k,m\) and \(N\in G_2\cap Q_r\), \(\omega(r)\leq r-1\), let \(C_{r,k}\) denote the set of positive integers \(n\) such that \(n=N\) or \(n= pmN\) with \((pm,N)=1\).
Calderón, Catalina, Zarate, María José   +1 more
openaire   +2 more sources

Linear Toroidal‐Inertial Waves on A Differentially Rotating Sphere with Application to Helioseismology: Modeling, Forward and Inverse Problems

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT This paper develops a mathematical framework for interpreting observations of solar inertial waves in an idealized setting. Under the assumption of purely toroidal linear waves on the sphere, the stream function of the flow satisfies a fourth‐order scalar equation.
Tram Thi Ngoc Nguyen, Damien Fournier, Laurent Gizon, Thorsten Hohage   +3 more
wiley   +1 more source

Smoothness and stability in the Alt-Phillips problem. [PDF]

Math Ann
Carducci M, Tortone G.
europepmc   +1 more source

Analysis of a Novel Time‐Continuous Dimer Growth Model Describing One Possible Cause of Alzheimer's Disease and a Time‐Discretization for Its Numerical Simulation

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT Because oligomers of the amyloid‐β$$ \beta $$ (Aβ$$ A\beta $$) protein can possibly be regarded as one main cause for progressive development of Alzheimer's disease, different mathematical models for its emergence have been proposed by different scientific groups.
Benjamin Wacker
wiley   +1 more source

On the real zeroes of half-integral weight Hecke cusp forms. [PDF]

Math Ann
Jääsaari J.
europepmc   +1 more source

Consistent Quadratic Phase Formation in 3D Fast Spin Echo Using Frequency‐Modulated RF Pulses

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Frequency‐modulated (FM) RF pulses achieve broadband excitation with low RF peak power, which is required in MRI with inhomogeneous magnetic fields. However, the quadratic phase generated with FM pulses makes it difficult to use them in fast spin echo (FSE), because even and odd refocused echoes have different spatial phase profiles ...
Naoharu Kobayashi, Michael Garwood
wiley   +1 more source

Asymptotic quantification of entanglement with a single copy. [PDF]

Nat Phys
Lami L, Berta M, Regula B.
europepmc   +1 more source