Research output: Contribution to journal › Article › peer-review
Recurrence along directions in multidimensional words. / Charlier, Émilie; Puzynina, Svetlana; Vandomme, Élise.
In: Discrete Mathematics, Vol. 343, No. 10, 112006, 10.2020.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Recurrence along directions in multidimensional words
AU - Charlier, Émilie
AU - Puzynina, Svetlana
AU - Vandomme, Élise
PY - 2020/10
Y1 - 2020/10
N2 - In this paper we introduce and study new notions of uniform recurrence in multidimensional words. A d-dimensional word is called uniformly recurrent if for all (s1,…,sd)∈Nd there exists n∈N such that each block of size (n,…,n) contains the prefix of size (s1,…,sd). We are interested in a modification of this property. Namely, we ask that for each rational direction (q1,…,qd), each rectangular prefix occurs along this direction in positions ℓ(q1,…,qd) with bounded gaps. Such words are called uniformly recurrent along all directions. We provide several constructions of multidimensional words satisfying this condition, and more generally, a series of four increasingly stronger conditions. In particular, we study the uniform recurrence along directions of multidimensional rotation words and of fixed points of square morphisms.
AB - In this paper we introduce and study new notions of uniform recurrence in multidimensional words. A d-dimensional word is called uniformly recurrent if for all (s1,…,sd)∈Nd there exists n∈N such that each block of size (n,…,n) contains the prefix of size (s1,…,sd). We are interested in a modification of this property. Namely, we ask that for each rational direction (q1,…,qd), each rectangular prefix occurs along this direction in positions ℓ(q1,…,qd) with bounded gaps. Such words are called uniformly recurrent along all directions. We provide several constructions of multidimensional words satisfying this condition, and more generally, a series of four increasingly stronger conditions. In particular, we study the uniform recurrence along directions of multidimensional rotation words and of fixed points of square morphisms.
KW - Multidimensional morphisms
KW - Multidimensional words
KW - Uniform recurrence
KW - SEQUENCES
KW - TILINGS
KW - COMBINATORICS
UR - http://www.scopus.com/inward/record.url?scp=85086726135&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/38ab19c6-bea5-352c-8bb4-4fa73473acb6/
U2 - 10.1016/j.disc.2020.112006
DO - 10.1016/j.disc.2020.112006
M3 - Article
AN - SCOPUS:85086726135
VL - 343
JO - Discrete Mathematics
JF - Discrete Mathematics
SN - 0012-365X
IS - 10
M1 - 112006
ER -
ID: 62340716