Results 121 to 130 of about 4,272 (299)

The positive-definite completion problem

Transactions of the American Mathematical Society
We study the positive-definite completion problem for kernels on a variety of domains and prove results concerning the existence, uniqueness, and characterization of solutions. In particular, we study a special solution called the canonical completion which is the reproducing kernel analogue of the determinant-maximizing completion known to exist for ...
Waghmare, Kartik G., Panaretos, Victor M.   +1 more
openaire   +3 more sources

‘Turkeys Cannot Vote for Christmas’: Why Epistemic Disobedience in an Anti‐Black World Matters

Australian Journal of Social Issues, EarlyView.
ABSTRACT Never in the history of global coloniality has the idea of epistemic disobedience been as important as in the 21st century. This is not only because the struggle for decolonisation has shifted from physical confrontation between the coloniser and the colonised into a battle of ideas but also because the former has deployed the idea of ...
Morgan Ndlovu
wiley   +1 more source

The Dirichlet problem successive upper relaxation numerical method convergence relaxation parameters influence investigations

Karpatsʹkì Matematičnì Publìkacìï, 2012
The relaxation parameters values to definite sequential upper relaxation block method convergence optimal velocity have been determined for the Dirichlet's problem in two-dimensional rectangle spatial region, the iteration procedure convergence and ...
Oliynyk A.P., Shtayer L.O.
doaj  

Existence and uniqueness of the solution of the initialboundary value problem for one-dimensional equations of the dynamics of a compressible viscous mixture

Современная математика: Фундаментальные направления
In this paper, an initial-boundary value problem is studied for one-dimensional equations of the dynamics of a compressible viscous mixture. A theorem is proved for the existence and uniqueness of a solution to the initial-boundary value problem without ...
V. Yu. Nogovishcheva, D. A. Prokudin
doaj   +1 more source

Strictly Positive Definite Functions

Journal of Approximation Theory, 1996
A complex-valued continuous function defined on \(\mathbb{R}\) is said to be strictly positive definite on \(\mathbb{R}\) if the \(n\) by \(n\) matrix \((f(x_i- x_j))\) is positive definite for all choices of pairwise distinct points \(x_1,x_2,\dots,x_n\in\mathbb{R}\), and all \(n\geq 1\).
openaire   +1 more source

Expectations and Reality: The Lived Experiences of Australians With Psychosocial Disability Within the NDIS

Australian Journal of Social Issues, EarlyView.
ABSTRACT While Australia's National Disability Insurance Scheme (NDIS) was founded on principles of choice and control, for people with significant mental health challenges (what the NDIS calls ‘psychosocial disability’) these ideals often remain elusive. Support systems continue to be fractured and in the context of ongoing policy reforms, it is vital
Joel Hollier, Jennifer Smith‐Merry
wiley   +1 more source

Prognostic significance of tumor microenvironment assessed by machine learning algorithm in surgically resected non‐small cell lung cancer

Cancer Reports, EarlyView., 2023
Abstract Background A methodology to assess the immune microenvironment (IME) of non‐small cell lung cancer (NSCLC) has not been established, and the prognostic impact of IME factors is not yet clear. Aims This study aimed to assess the IME factors and evaluate their prognostic values. Methods and Results We assessed CD8+ tumor‐infiltrating lymphocyte (
Yukihiro Terada, Mitsuhiro Isaka, Akira Ono, Takuya Kawata, Masakuni Serizawa, Keita Mori, Koji Muramatsu, Kiyoshi Tone, Hirotsugu Kenmotsu, Keiichi Ohshima, Kenichi Urakami, Takeshi Nagashima, Masatoshi Kusuhara, Yasuto Akiyama, Takashi Sugino, Toshiaki Takahashi, Yasuhisa Ohde   +16 more
wiley   +1 more source

Checking the definiteness of forms [PDF]

, 2020
It is suggested to verify the positive definiteness (or semidefiniteness) of finite quadratic and fourth-degree forms on the basis of the classical unconstrained optimization techniques, such as the steepest descent method and the conjugate gradient ...
Arutyunov A.V., Izmailov A.F.
core  

Neurotransmitter‐Defined Degeneration Patterns in Sporadic and C9orf72‐Associated Amyotrophic Lateral Sclerosis: Predilection to GABAergic, Serotonergic, Opioid, Glutamatergic, Endocannabinoid, and Microglial Systems—Implications for Therapy Development

Annals of Neurology, EarlyView.
Objective Amyotrophic lateral sclerosis (ALS) has a markedly distinctive clinical and neuroradiological signature, with the preferential involvement of specific brain networks and the apparent sparing of others. The molecular underpinnings of the strikingly selective anatomical vulnerability have not been fully elucidated to date despite the potential ...
Marlene Tahedl, We Fong Siah, Jasmin Lope, Jennifer C. Hengeveld, Mark A. Doherty, Russell L. McLaughlin, Orla Hardiman, Ee Ling Tan, Alison Toomey, Jana Kleinerova, Peter Bede   +10 more
wiley   +1 more source

On the Positive Definiteness of the Information Matrix Under the Binary and Poisson Mixed Models [PDF]

Estimating function, Fisher information matrix, generalised linear mixed model, joint estimates, likelihood estimation, positive definiteness, regression effects, variance component of the random effects,
Rahul Mukerjee, Brajendra Sutradhar
core   +1 more source