Results 31 to 40 of about 31,140,139 (245)

Join Spaces and Lattices

open access: yesAxioms
Hypergroups represent a generalization of groups, introduced by Marty, that are rich in applications in several sectors of mathematics and in other fields.
Violeta Leoreanu-Fotea   +1 more
doaj   +1 more source

Larger Corner-Free Sets from Better NOF Exactly-$N$ Protocols

open access: yesDiscrete Analysis, 2021
Larger corner-free sets from better NOF exactly-$N$ protocols, Discrete Analysis 2021:19, 9 pp. If $G$ is an Abelian group, then a _corner_ in $G^2$ is a subset of the form $\{(x,y),(x+d,y),(x,y+d)\}$ with $d\ne 0$.
Nati Linial, Adi Shraibman
doaj   +1 more source

Combinatorial proof of Selberg's integral formula

open access: yes, 2022
In this paper we present a combinatorial proof of Selberg's integral formula. We prove a theorem about the number of topological orderings of a certain related directed graph bijectively. Selberg's integral formula then follows by induction.
Haupt, Alexander
core   +1 more source

On Singleton 3-Rainbow Domination of Cylindrical Graphs

open access: yesMathematics
Domination is among the most popular topics in graph theory, both due to its combinatorial appeal and a number of practical applications. Cylindrical graphs are Cartesian products of a path and a cycle.
Janez Žerovnik
doaj   +1 more source

Limits of Latin squares

open access: yesDiscrete Analysis, 2023
Limits of Latin squares, Discrete Analysis 2023:8, 66 pp. There has been a great deal of work over the last fifteen to twenty years on the theme of continuous limits of discrete combinatorial objects. In particular, any sequence of graphs of increasing
Frederik Garbe   +3 more
doaj   +1 more source

Survival After Hematopoietic Stem Cell Transplantation in Diamond–Blackfan Anemia Syndrome: The Role of Iron Overload—A Systematic Review

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT We assessed the effect of iron overload (IO) on mortality and complications following hematopoietic stem cell transplantation (HSCT) in patients with Diamond–Blackfan anemia syndrome (DBAS) in a systematic review of individual participant data and cohort data from observational studies.
Geoffrey Z. L. Kuppens   +6 more
wiley   +1 more source

On Structural Parameterizations of Hitting Set: Hitting Paths in Graphs Using 2-SAT

open access: yesJournal of Graph Algorithms and Applications, 2017
${\rm H{\small ITTING}~S{\small ET}}$ is a classic problem in combinatorial optimization. Its input consists of a set system $\mathcal F$ over a finite universe $U$ and an integer $t$; the question is whether there is a set of $t$ elements that ...
Bart Jansen
doaj   +1 more source

Experience With Performing Rheocarna Therapy via the Single‐Needle Method for Treatment of Chronic Limb‐Threatening Ischemia

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction This study investigated the safety and efficacy of single‐needle Rheocarna therapy for chronic limb‐threatening ischemia (CLTI) with wounds. Methods Six patients with CLTI involving ulcers unresponsive to revascularization underwent single‐needle Rheocarna treatment.
Yasutaka Yamauchi   +9 more
wiley   +1 more source

Conferences on Combinatorial and Additive Number Theory

open access: yes, 2014
This proceedings volume is based on papers presented at the Workshops on Combinatorial and Additive Number Theory (CANT), which were held at the Graduate Center of the City University of New York in 2011 and 2012.
Nathanson, Melvyn
core   +1 more source

Effectiveness of Resistance Intradialytic Exercise Compared to Aerobic Intradialytic Exercise for Patients With Chronic Kidney Disease: A Randomized Controlled Clinical Trial

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Patients with chronic kidney disease undergoing hemodialysis commonly experience reduced physical function, fatigue, poor sleep quality, and impaired health‐related quality of life. Intradialytic exercise has been proposed as a non‐pharmacological strategy to improve these outcomes.
Klebson da Silva Almeida   +6 more
wiley   +1 more source

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