Results 31 to 40 of about 572,970 (312)

The Yang-Lee zeros of the 1D Blume-Capel model on connected and non-connected rings

, 2005
We carry out a numerical and analytic analysis of the Yang-Lee zeros of the 1D Blume-Capel model with periodic boundary conditions and its generalization on Feynman diagrams for which we include sums over all connected and non-connected rings for a given
Ambjorn J, Ambjorn J, Asano T, Bachas C, Bender C M, Bessis D, Biskup M, Blume M, Blume M, Boulatov D, Capel H W, D Dalmazi, de Albuquerque L C, Dolan B P, Dunlop F, Glumac Z, Griffiths R B, Ising E, Janke W, Johnston D A, Kazakov V A, Lee T D, Luis A F Almeida, Staudacher M, Suzuki M, Suzuki M, Wang Xian-Zhi, Yang C N   +27 more
core   +1 more source

Spectral Analysis of Certain Schrödinger Operators

Symmetry, Integrability and Geometry: Methods and Applications, 2012
The J-matrix method is extended to difference and q-difference operators and is applied to several explicit differential, difference, q-difference and second order Askey-Wilson type operators.
Mourad E.H. Ismail, Erik Koelink
doaj   +1 more source

Generalizations of the Eneström–Kakeya Theorem Involving Weakened Hypotheses

AppliedMath, 2022
The well-known Eneström–Kakeya Theorem states that, for P(z)=∑ℓ=0naℓzℓ, a polynomial of degree n with real coefficients satisfying 0≤a0≤a1≤⋯≤an, then all the zeros of P lie in |z|≤1 in the complex plane. Motivated by recent results concerning an Eneström–
Robert Gardner, Matthew Gladin
doaj   +1 more source

INEQUALITIES CONCERNING B-OPERATORS

Проблемы анализа, 2016
Let P_n be the class of polynomials of degree at most n. Rahman introduced the class B_n of operators B that map P_n into itself. In this paper we prove some results concerning such operators and thereby obtain generalizations of some well known ...
W. M. Shah, A. Liman
doaj   +1 more source

Exact results for the zeros of the partition function of the Potts model on finite lattices

, 1999
The Yang-Lee zeros of the Q-state Potts model are investigated in 1, 2 and 3 dimensions. Analytical results derived from the transfer matrix for the one-dimensional model reveal a systematic behavior of the locus of zeros as a function of Q.
Baxter, Baxter, Bhanot, Buffernoir, Bulirsch, Creswick, Creswick, Fisher, Glumac, Henkel, Janke, Kaufman, Kim, Kim, Kim, Onsager, Potts, Richard J Creswick, Seung-Yeon Kim, Stošić, Wu, Yang   +21 more
core   +1 more source

Changes in Body Composition in Children and Young People Undergoing Treatment for Acute Lymphoblastic Leukemia: A Systematic Review and Meta‐Analysis

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Ongoing evidence indicates increased risk of sarcopenic obesity among children and young people (CYP) with acute lymphoblastic leukemia (ALL), often beginning early in treatment, persisting into survivorship. This review evaluates current literature on body composition in CYP with ALL during and after treatment.
Lina A. Zahed, Raquel Revuelta Iniesta, Mary Fewtrell, Julie Lanigan, Breeana Gardiner, Graeme O'Connor   +5 more
wiley   +1 more source

Higher Monotonicity Properties for Zeros of Certain Sturm-Liouville Functions

Mathematics, 2023
In this paper, we consider the differential equation y″+ω2ρ(x)y=0, where ω is a positive parameter. The principal concern here is to find conditions on the function ρ−1/2(x) which ensure that the consecutive differences of sequences constructed from the ...
Tzong-Mo Tsai
doaj   +1 more source

Partition function zeros of the Q-state Potts model for non-integer Q

, 1999
The distribution of the zeros of the partition function in the complex temperature plane (Fisher zeros) of the two-dimensional Q-state Potts model is studied for non-integer Q.
Baxter, Blöte, Bulirsch, Chen, Chen, Chi-Ning Chen, Chin-Kun Hu, Creswick, den Nijs, Ferreira, Fisher, Fortuin, Henkel, Nightingale, Richard J Creswick, Saleur, Seung-Yeon Kim, Wang, Wu   +18 more
core   +1 more source

Zero hunger [PDF]

Science, 2014
The United Nations (UN) designated 2014 as the International Year of Family Farming, recognizing that an estimated 500 million family farms, involving over 2 billion people, play a key role in food production and consumption worldwide. It is thus an opportune time to encourage a shift in tackling global hunger—from a “food security” focus to an agenda ...
openaire   +2 more sources

Predicting Chronicity in Children and Adolescents With Newly Diagnosed Immune Thrombocytopenia at the Timepoint of Diagnosis Using Machine Learning‐Based Approaches

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Objectives To identify predictors of chronic ITP (cITP) and to develop a model based on several machine learning (ML) methods to estimate the individual risk of chronicity at the timepoint of diagnosis. Methods We analyzed a longitudinal cohort of 944 children enrolled in the Intercontinental Cooperative immune thrombocytopenia (ITP) Study ...
Severin Kasser, Alice Bizeul, Meera Chitlur, Hugo Donato, Jelena Roganovic, Julia E. Vogt, Thomas Kühne   +6 more
wiley   +1 more source