Results 241 to 250 of about 808,716 (283)

Complex Positive Definite Functions on Strips

Complex Analysis and Operator Theory, 2016
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Buescu, Jorge, Coelho, Jose, Symeonides, A.   +2 more
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On the Measurability of Positive Definite and Conditionally Positive Definite Functions

Mathematische Nachrichten, 1986
Let f be a positive definite function on a locally compact abelian group G. In this paper we show that measurability of f on an open neighbourhood of the zero implies measurability of f on G. The same result holds for conditionally positive definite functions.
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On Quotients of Positive Definite Functions

Acta Mathematica Hungarica, 2000
Let \(E'\) be the space of distributions with compact support and \(S\) be the space of complex valued Schwartz functions. The main result is: Let \(f:\mathbb R\to \mathbb R\) be the Fourier transform of a real \(T\in E'\). Then \(f\) is the quotient of two positive definite functions from \(S\) if and only if \(f(0)\neq 0\).
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Positive Definite Functions

2009
Ward Cheney, Will Light
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Systemic therapy for hormone receptor‐positive/human epidermal growth factor receptor 2‐negative early stage and metastatic breast cancer

Ca-A Cancer Journal for Clinicians, 2023
Laura A Huppert, Hope S Rugo
exaly  

On Positive-Definite Functions

Proceedings of the London Mathematical Society, 1956
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Positive Definite Functions on Separable Function Spaces

1996
A notion of a separable function space is defined. It is proved that a positive definite function on the semigroup of the positive elements of a separable function space is the Laplace transform of a measure concentrated on the set of positive functionals.
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Evolving standards of care and new challenges in the management of HER2‐positive breast cancer

Ca-A Cancer Journal for Clinicians, 2020
Grace M Choong, Grace D Cullen, Ciara C O'sullivan   +2 more
exaly  

Symmetrically Positive Definite Functions

1974
In this thesis we study the representation theorems for evenly positive definite functions on Euclidean spaces. A generalization of the concept of evenness on R^n to a concept of symmetry on any locally compact abelian group is given. In addition, a result analogous to the Weil-Povzner-Raikov Theorem is obtained for the representation of symmetrically
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Effect of early interferon treatment on conversion to definite multiple sclerosis: a randomised study

Lancet, The, 2001
Giancarlo Comi, Massimo Filippi, Frederik Barkhof   +2 more
exaly