Results 61 to 70 of about 2,415 (165)
Commuting matrices and multiparameter eigenvalue problems
, 1993 Bibliography: p. 164-179.
openaire +2 more sources
Two-parametric PT-symmetric quartic family
, 2011 We describe a parametrization of the real spectral locus of the two-parametric family of PT-symmetric quartic oscillators. For this family, we find a parameter region where all eigenvalues are real, extending the results of Dorey, Dunning, Tateo and Shin.
Alexandre Eremenko +15 more
core +4 more sources
Multivariate Estimation of Poisson Parameters
, 2019 This paper is devoted to the multivariate estimation of a vector of Poisson means. A novel loss function that penalises bad estimates of each of the parameters and the sum (or equivalently the mean) of the parameters is introduced.
Hjort, Nils Lid, Stoltenberg, Emil Aas
core +1 more source
A Hamiltonian-Entropy Production Connection in the Skew-symmetric Part of a Stochastic Dynamics [PDF]
, 2013 The infinitesimal transition probability operator for a continuous-time discrete-state Markov process, $\mathcal{Q}$, can be decomposed into a symmetric and a skew-symmetric parts.
Qian, Hong
core
Constructive solutions for nonlinear multiparameter eigenvalue problems
Computers & Mathematics with Applications, 1998 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire +2 more sources
Abstract oscillation theorems for multiparameter eigenvalue problems
Journal of Differential Equations, 1983 AbstractWe prove abstract analogous of Klein's oscillation theorem by demonstrating the existence (and in some cases uniqueness) of eigenpairs with a given index for the multiparameter problem Tmxm = ∑n = 1k λnVmnxm, 0 ≠ xm ϵ Hm, m = 1 … k. (∗) Here Tm and Vmn are self-adjoint operators on Hilbert spaces Hm. The index is based on the number of negative
openaire +1 more source
Information geometry for multiparameter models: new perspectives on the origin of simplicity. [PDF]
Rep Prog Phys, 2022 Quinn KN +4 more
europepmc +1 more source
Dual variational approaches to multiparameter eigenvalue problems
Journal of Mathematical Analysis and Applications, 1983 AbstractWe study the abstract multiparameter problem Tmxm = ∑kn=1 λn Vmnxm, 0 ≠ xm ϵ Hm, m = 1,…, k, for selfadjoint operators Tm and Vmn on separable Hilbert spaces Hm. We develop dual variational approaches related to the polar duality between certain convex sets. The “primal” approach has been the basis of several investigations, particularly in the
openaire +1 more source
Temporal teleportation with pseudo-density operators: How dynamics emerges from temporal entanglement. [PDF]
Sci Adv, 2021 Marletto C +7 more
europepmc +1 more source