نتایج جستجو برای: doubly regular tournament

تعداد نتایج: 137080  

Journal: :The Journal of Combinatorics 2021

For a tournament $H$ with $h$ vertices, its typical density is $h!2^{-\binom{h}{2}}/aut(H)$, i.e. this the expected of in random tournament. A family ${\mathcal F}$ $h$-vertex tournaments {\em dominant} if for all sufficiently large $n$, there exists an $n$-vertex $G$ such that each element larger than by constant factor. Characterizing dominant families challenging already small $h$. Here we c...

2001
Kelly Easton George L. Nemhauser Michael A. Trick

Journal: :Interfaces 2012
Flavia Bonomo Andrés Cardemil Guillermo Durán Javier Marenco Daniela Sabán

Since the scheduling of sports leagues involves many kinds of constraints and the minimization of costs or travel distances, sports scheduling has become a very active field, providing both interesting and challenging problems to the combinatorial optimization community. In this work we describe the automatic scheduling of the regular phase of the Argentine first division volleyball league and ...

Journal: :Discrete Mathematics 1998
Joaquin O. Carbonara

In this paper we use tournament matrices to give a combinatorial interpretation for the entries of the inverse t-Kostka matrix, which is the transition matrix between the Hall-Littlewood polyno-mials and the Schur functions. 0.1 Introduction In the rst section of this paper we introduce some basic notation about tournament matrices, and prove a theorem that is crucial in the second section. In ...

Journal: :Discrete & Computational Geometry 2001
V. Elser

The level set of an elliptic function is a doubly periodic point set in C. To obtain a wider spectrum of point sets, we consider, more generally, a Riemann surface S immersed in C2 and its sections (“cuts”) by C. We give S a crystallographic isometry in C2 by defining a fundamental surface element as a conformal map of triangular domains and S as its extension by reflections in the triangle edg...

Journal: :Cardiovascular research 2010
Yasuko Yatera Kiyoko Shibata Yumi Furuno Ken Sabanai Naoya Morisada Sei Nakata Tsuyoshi Morishita Yumiko Toyohira Ke-Yong Wang Akihide Tanimoto Yasuyuki Sasaguri Hiromi Tasaki Yasuhide Nakashima Hiroaki Shimokawa Nobuyuki Yanagihara Yutaka Otsuji Masato Tsutsui

AIMS The precise role of the nitric oxide synthase (NOS) system in lipid metabolism remains to be elucidated. We addressed this point in mice that we have recently developed and that lack all three NOS isoforms. METHODS AND RESULTS Wild-type (WT), singly, doubly, and triply NOS(-/-) mice were fed either a regular or high-cholesterol diet for 3-5 months. The high-cholesterol diet significantly...

ژورنال: پژوهش های ریاضی 2020

Doubly stochastic matrices play a fundamental role in the theory of majorization. Birkhoff's theorem explains the relation between $ntimes n$ doubly stochastic matrices and permutations. In this paper, we first introduce double-null  operators and we will find some important properties of them. Then with the help of double-null operators, we investigate Birkhoff's theorem for descreate $l^p$ sp...

Journal: :Journal of Combinatorial Theory, Series B 1993

2013
CHANDRA SHEKAR

This paper is concerned with the design of systolic array by using linear mapping techniques on regular dependence graph (DG), the mapping technique transforms a Dependency graph to a space-time representation, where each node is mapped to a certain processing element and is scheduled to a certain time instance. The systolic design methodology maps an N-dimensional DG to a lower dimensional sys...

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