Results 51 to 60 of about 458,761 (298)

Carcinomas and Carcinoid Tumors of the Lungs and Bronchi in Children and Adolescents: The EXPeRT Recommendations

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Primary lung carcinomas and bronchial carcinoid tumors (BC) are very rare malignancies in childhood. While typical BC and mucoepidermoid carcinomas are mostly low‐grade, localized tumors with a more favorable prognosis than in adults, necessitating avoidance of overtreatment, adenocarcinomas of the lung are often diagnosed at advanced disease ...
Michael Abele   +19 more
wiley   +1 more source

Maps preserving matrices of extremal scrambling index

open access: yesSpecial Matrices, 2018
In this paper we characterize surjective linear maps on matrices over antinegative semirings that preserve the set of matrices with maximal or minimal positive values of the scrambling index.
Guterman A.E., Maksaev A.M.
doaj   +1 more source

Linear maps preserving permutation and stochastic matrices

open access: yes, 2002
Let T be the set of n×n (sub)permutation matrices, doubly (sub)stochastic matrices, or the set of m×n column or row (sub)stochastic matrices. We characterize those linear maps T on the linear span of T that satisfy T(T)=T .
Li, Chi-Kwong   +9 more
core   +1 more source

European Standard Clinical Practice Guideline and EXPeRT Recommendations for the Diagnosis and Management of Gastroenteropancreatic Neuroendocrine Neoplasms in Children and Adolescents

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen   +23 more
wiley   +1 more source

Quadratic optimization of fixed points for a family of nonexpansive mappings in Hilbert space

open access: yesFixed Point Theory and Applications, 2004
Given a finite family of nonexpansive self-mappings of a Hilbert space, a particular quadratic functional, and a strongly positive selfadjoint bounded linear operator, Yamada et al.
B. E. Rhoades
doaj   +2 more sources

Characterization of the order relation on the set of completely n-positive linear maps between C*-algebras [PDF]

open access: yesSurveys in Mathematics and its Applications, 2007
In this paper we characterize the order relation on the set of all nondegenerate completely n-positive linear maps between C*-algebras in terms of a self-dual Hilbert module induced by each completely n-positive linear map.
Maria Joita   +2 more
doaj  

Extremal problems for completely positive maps

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1994
In this note, we study the faces of some convex subsets of CPc(A,B(ℋ))(the continuous completely positive linear maps from pro-C*-algebra A to B(ℋ)).
Mingze Yang
doaj   +1 more source

Crossed Product of a C*-Algebra by a Semigroup of Interactions

open access: yesDemonstratio Mathematica, 2014
The paper presents a construction of the crossed product of a C*-algebra by a commutative semigroup of bounded positive linear maps generated by partial isometries.
Kwaśniewski B. K.
doaj   +1 more source

Hyper-parameter Tuning for Quantum Support Vector Machine

open access: yesAdvances in Electrical and Computer Engineering, 2022
In recent years, the positive effect of quantum techniques on machine learning methods have been studied. Especially in training big data, quantum computing is beneficial in terms of speed.
DEMIRTAS, F., TANYILDIZI, E.
doaj   +1 more source

Non-linear monotone positive maps

open access: yesJournal of Operator Theory, 2021
e study several classes of general non-linear positive maps between C∗-algebras, which are not necessary completely positive maps. We characterize the class of the compositions of ∗-multiplicative maps and positive linear maps as the class of non-linear maps of boundedly positive type abstractly.
Nagisa, Masaru, Watatani, Yasuo
openaire   +2 more sources

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