Title
Nonhomogeneous Beatty Sequences Leading to Invariant Games.
Abstract
We characterize pairs of complementary nonhomogeneous Beatty sequences (A(n))(n> 0) and (B-n)(n> 0), with the restriction A(1) = 1 and B-1 >= 3, for which there exists an invariant take-away game having {(A(n), B-n), (B-n, A(n)) | n > 0} boolean OR {(0, 0)} as a set of P-positions. Using the notion of a Sturmian word arising in combinatorics on words, this characterization can be translated into a decision procedure relying only on a few algebraic tests about algebraicity or rational independence. This work partially answers to a question of Larsson, Hegarty, and Fraenkel, raised in [Theoret. Comput. Sci., 412 (2011), pp. 729- 735].
Year
DOI
Venue
2016
10.1137/130948367
SIAM JOURNAL ON DISCRETE MATHEMATICS
Keywords
Field
DocType
two-player combinatorial game,Beatty sequence,Sturmian word,invariant game,superadditivity
Discrete mathematics,Superadditivity,Combinatorics,Algebraic number,Sturmian word,Existential quantification,Beatty sequence,Invariant (mathematics),Combinatorics on words,Mathematics
Journal
Volume
Issue
ISSN
30
3
0895-4801
Citations 
PageRank 
References 
0
0.34
0
Authors
3
Name
Order
Citations
PageRank
Julien Cassaigne128240.80
Éric Duchêne2308.85
Michel Rigo319032.42