Results 221 to 230 of about 1,100,887 (279)

Mortality and diagnostic practice variation in interstitial lung disease admissions: insights from a multicentre UK cohort study. [PDF]

open access: yesBMJ Open Respir Res
White LJ   +25 more
europepmc   +1 more source

Improved Arabic query expansion using word embedding. [PDF]

open access: yesSci Rep
Al-Lahham YA   +3 more
europepmc   +1 more source

Paediatric Acute Generalised and Localised Exanthematous Pustulosis: A Systematic Review

open access: yes
JEADV Clinical Practice, EarlyView.
Miranda K. Branyiczky   +6 more
wiley   +1 more source

Extrapolated positive definite and positive semi-definite splitting methods for solving non-Hermitian positive definite linear systems

Applications of Mathematics, 2021
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Shokrpour, Raheleh, Ebadi, Ghodrat
openaire   +2 more sources

On Different Definitions of Positive Definiteness

Mathematische Nachrichten, 1991
Let the function \(T^*\) be defined by \(T^*(a)=T(a^{-1})^*\) for a function \(T\) of a group \(G\) into a Hilbert space. The authors show that the commutativity of \(G\) is equivalent to each of the conditions below: (1) \(T^*\) is positive definite for every representation \(T\) of \(G\) in Hilbert space.
Friedrich, J., Klotz, L.
openaire   +1 more source

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