Results 191 to 200 of about 6,990 (214)

Regional Hexagonal Tile Rewriting Grammars

2012
Regional tile rewriting grammars are recently introduced tiling based array rewriting grammar models on picture processing. They extend context free string grammars to rectangular array grammars with polynomial time complexity. We introduce Regional Hexagonal Tile Rewriting Grammar (RHTRG) and generate images.
Thangasamy Kamaraj, Durairaj Gnanaraj Thomas   +1 more
openaire   +1 more source

Lozenge tilings of holey hexagons

2020
In combinatorics, there are many tiling problems as regions and type of tiles can vary. In general, whenever we are given the region to tile and types of tiles, there are 3 things to consider. 1. The tilability of the region : Can one tile the given region with given shapes of tiles? 2. Enumeration of tilings : How many tilings are there? 3. Asymptotic
openaire   +1 more source

Results on Hexagonal Tile Rewriting Grammars

2008
Tile rewriting grammars are a new model for defining picture languages. In this paper we propose hexagonal tile rewriting grammars (HTRG) for generating hexagonal picture languages. Closure properties of HTRG are proved for some basic operations. We compare HTRG with hexagonal tiling systems.
D. G. Thomas, F. Sweety, T. Kalyani
openaire   +1 more source

Tiling the Plane with Different Hexagons and Triangles

The American Mathematical Monthly, 2016
Fil: Panzone, Pablo Andres. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Bahia Blanca. Instituto de Matematica Bahia Blanca. Universidad Nacional del Sur. Departamento de Matematica.
openaire   +2 more sources

Tetranacci Identities Via Hexagonal Tilings

The Fibonacci Quarterly, 2022
Ziqian (Alexa) Jin, Greg Dresden
openaire   +1 more source

Hexagonal Perovskites as Quantum Materials

Chemical Reviews, 2021
Loi T Nguyen, Robert Cava
exaly  

Atomically Thin Hexagonal Boron Nitride and Its Heterostructures

Advanced Materials, 2021
Jia Zhang, Biying Tan, Xin Zhang
exaly  

Tiled Hexagons

2008
openaire   +1 more source

Photonics with hexagonal boron nitride

Nature Reviews Materials, 2019
Josh D Caldwell, Igor Aharonovich, Fosa, Frsn, Guillaume Cassabois   +2 more
exaly  

Piezoelectricity in Monolayer Hexagonal Boron Nitride

Advanced Materials, 2020
Pablo Ares, Tommaso Cea, Matthew Holwill
exaly