Stephen Lay, The Reconquest kings of Portugal
نویسندگان
چکیده
منابع مشابه
The Complexity of Kings
A king in a directed graph is a node from which each node in the graph can be reached via paths of length at most two. There is a broad literature on tournaments (completely oriented digraphs), and it has been known for more than half a century that all tournaments have at least one king [Lan53]. Recently, kings have proven useful in theoretical computer science, in particular in the study of t...
متن کاملOn the 3-kings and 4-kings in multipartite tournaments
Koh and Tan gave a sufficient condition for a 3-partite tournament to have at least one 3-king in [K.M. Koh, B.P. Tan, Kings in multipartite tournaments, Discrete Math. 147 (1995) 171–183, Theorem 2]. In Theorem 1 of this paper, we extend this result to n-partite tournaments, where n 3. In [K.M. Koh, B.P. Tan, Number of 4-kings in bipartite tournaments with no 3-kings, Discrete Math. 154 (1996)...
متن کاملThe Problem of the Kings
On a 2m 2n chessboard, the maximum number of nonattacking kings that can be placed is mn, since each 22 cell can have at most one king. Let f m (n) denote the number of ways that mn nonattacking kings can be placed on a 2m 2n chessboard. The purpose of this paper is to prove the following result. such that f m (n) = (c m n + d m)(m + 1) n + O(n m) (n ! 1): For every such placement of kings, the...
متن کاملOn the Domination of Kings
In this paper, we consider counting the number of ways to place kings on an k × n chessboard, such that every square is dominated by a king. Let f(k, n) be the number of dominating configurations. We consider the asymptotic behavior of the function f(k, n).
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This article provides a contribution to the debate about the processes of circulation of knowledge and meanings among experts and laymen regarding the status of human embryos in Portugal. It weighs up the expectations and concerns regarding the reliability, quality, safety and efficacy of medically assisted reproductive technologies. Individual interviews, aimed at exploring the complexities, s...
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ژورنال
عنوان ژورنال: Mélanges de la Casa de Velázquez
سال: 2010
ISSN: 0076-230X,2173-1306
DOI: 10.4000/mcv.3478