๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

On the queen domination problem

โœ Scribed by Charles M. Grinstead; Bruce Hahne; David Van Stone


Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
393 KB
Volume
86
Category
Article
ISSN
0012-365X

No coin nor oath required. For personal study only.

โœฆ Synopsis


A configuration of queens on an m X m chessboard is said to dominate the board if every square either contains a queen or is attacked by a queen. The configuration is said to be non-attacking if no queen attacks another queen. Let f(m) and g(m) equal the minimum number of queens and the minimum number of non-attacking queens, respectively, needed to dominate an m x m chessboard. We prove that:

(1) f(m)sgm+O(l), and

(2) g(m) G $rn + O(1).

These are the best upper bounds known at the present time for these functions.


๐Ÿ“œ SIMILAR VOLUMES


The weighted perfect domination problem
โœ Chain-Chin Yen; R.C.T. Lee ๐Ÿ“‚ Article ๐Ÿ“… 1990 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 393 KB
On the modular n-queen problem
โœ Olof Heden ๐Ÿ“‚ Article ๐Ÿ“… 1992 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 408 KB

Heden, O., On the modular n-queen problem, Discrete Mathematics 102 (1992) 155-161. Let M(n) denote the maximum number of queens on a modular chessboard such that no two attack each other. We prove that if 4 or 6 divides n then M(n) c n -2 and if gcd(n, 24) = 8 then M(n) 2 n -2. We also show that M

On a Nordhaus-Gaddum type problem for in
โœ E.J. Cockayne; G. Fricke; C.M. Mynhardt ๐Ÿ“‚ Article ๐Ÿ“… 1995 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 254 KB

Let i(G) (i(G), respectively) be the independent domination number (i.e. smallest cardinality of a maximal independent vertex subset) of the p-vertex graph G (the complement G of G, respectively). We prove limp~[max~ i(G)i(Cr)/p 2] = 1/16.

Domination and irredundance in the queen
โœ A.P Burger; E.J Cockayne; C.M Mynhardt ๐Ÿ“‚ Article ๐Ÿ“… 1997 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 1020 KB

The vertices of the queem;' graph {~, are the squares of an n ร— n chessboard and two squares are adjacent ifa queen placed on one covers the other. It is shown that the domination num;~'r of Q. is at most 31n/54 + O(1), that Q. possesses minimal dominating sets of cardina~tty 5n/2 -O(l) and that the