Results 101 to 110 of about 285,691 (303)

Total positivity properties of Jacobi–Stirling numbers [PDF]

open access: yes, 2012
The Jacobi–Stirling numbers of the first and second kinds were first introduced in Everitt et al. (2007) [8] and they are a generalization of the Legendre–Stirling numbers.
Mongelli, Pietro, Pietro Mongelli
core   +1 more source

Bases for shape preserving curves

open access: yesJournal of Numerical Analysis and Approximation Theory, 2003
The shape preserving properties of a curve in \(\mathbb{R}^2\) depend on the properties of the function basis we use in its representation. Both sign consistent and totally positive bases have shape preserving properties useful in Computer Aided ...
Francesca Pitolli
doaj   +2 more sources

Control Sets and Total Positivity

open access: yesSemigroup Forum, 2004
The goal of this paper is to connect two different mathematical subjects, namely totally positive matrices and control sets. The set \(T\) of totally positive matrices in \(Sl(d,\mathbb{R})\) (subgroup of determinant one matrices of size \(d \times d\)) is also a semigroup with non-empty interior in \(Sl(d,\mathbb{R})\).
Ayala, V, Kliemann, W, San Martin, LAB
openaire   +5 more sources

Inpatient Exposure, Confidence, and Knowledge in Pediatric Hematology/Oncology: Evaluating General Pediatric Residents During 2025 ACGME Curriculum Change

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background General pediatricians often evaluate hematologic and oncologic presentations before subspecialty consultation, yet the 2025 Accreditation Council for Graduate Medical Education (ACGME) pediatric requirements reduce inpatient pediatric hematology/oncology (PHO) time, raising questions about resident readiness.
Colburn Yu, Rohini Jain
wiley   +1 more source

Total Positivity of Almost-Riordan Arrays [PDF]

open access: yes
In this paper we study the total positivity of almost-Riordan arrays $(d(t)|\, g(t), f(t))$ and establish its necessary conditions and sufficient conditions, particularly, for some well used formal power series $d(t)$.
He, Tian-Xiao, Słowik, Roksana
core   +1 more source

Cone-theoretic generalization of total positivity [PDF]

open access: yes, 2012
This paper is devoted to the generalization of the theory of total positivity. We say that a linear operator A:Rn→Rn is generalized totally positive (GTP), if its jth exterior power ∧jA preserves a proper cone Kj⊂∧jRn for every j=1,…,n.
O.Y. Kushel, Kushel, O.Y.
core   +1 more source

Ovarian Sex Cord Stromal Tumors in Children and Adolescents—The European Standard Clinical Practice Recommendations

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT As part of the European Cooperative Study Group for Paediatric Rare Tumours initiative, we developed standard clinical practice guidelines for ovarian sex cord stromal tumors, based on comprehensive national and international cohort analyses, literature review, and a final expert consensus conference.
Dominik T. Schneider   +15 more
wiley   +1 more source

Seroprevalence of Mycoplasma Infection in Broiler Population of Assam

open access: yesInternational Journal of Bio-Resource and Stress Management, 2022
The experiment was conducted in the Department of Veterinary Pathology, C.V.Sc, A.A.U., Khanapara, Guuwahati, Assam, India during September, 2020−August, 2021. Avian Mycoplasmosis is a severe threat to the poultry industry. Mycoplasma gallisepticum (MG)
Rishabh Sarmah   +7 more
doaj  

Phase Angle as an Early Functional Biomarker of Cancer‐Related Fatigue in Pediatric Oncology: A Prospective Longitudinal Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Pediatric cancer remains a leading cause of morbidity and mortality worldwide, particularly in low‐and middle‐income countries. Cancer treatment may impair nutritional status, alter body composition, and exacerbate cancer‐related fatigue (CRF).
Luís Carlos Lopes‐Junior   +11 more
wiley   +1 more source

Total Positivity of Quasi-Riordan Arrays [PDF]

open access: yes
In this paper the total positivity of quasi-Riordan arrays is investigated with use of the sequence characterization of quasi-Riordan arrays. Due to the correlation between quasi-Riordan arrays and Riordan arrays, this study is an in-depth discussion of ...
He, Tian-Xiao, Słowik, Roksana
core   +1 more source

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