Revisiting a Tiling Hierarchy (II)

• 作者: Viorel Nitica
• 来源期刊: 离散数学期刊(英文)
• 学科: 数学
• 关键词: TILING POLYOMINO DEFICIENT Region TILE SET TILING HIERARCHY
• 年，卷（期）: 2018,（2）
• 页码范围: 48-63
• 页数: 16页
• 分类号: O1

摘要

In a recent paper, we revisited Golomb’s hierarchy for tiling capabilities of finite sets of polyominoes. We considered the case when only translations are allowed for the tiles. In this classification, for several levels in Golomb’s hierarchy, more types appear. We showed that there is no general relationship among tiling capabilities for types corresponding to same level. Then we found the relationships from Golomb’s hierarchy that remain valid in this setup and found those that fail. As a consequence we discovered two alternative tiling hierarchies. The goal of this note is to study the validity of all implications in these new tiling hierarchies if one replaces the simply connected regions by deficient ones. We show that almost all of them fail. If one refines the hierarchy for tile sets that tile rectangles and for deficient regions then most of the implications of tiling capabilities can be recovered.