Results 111 to 120 of about 6,990 (214)

Tilings by hexagonal prisms and embeddings into primitive cubic networks [PDF]

open access: bronze, 2020
Mikhail Bouniaev   +2 more
openalex   +1 more source

Coverage‐Controlled Superstructures of C3‐Symmetric Molecules: Honeycomb versus Hexagonal Tiling [PDF]

open access: hybrid, 2020
Torben Jasper‐Tönnies   +4 more
openalex   +1 more source

Centrally symmetric tilings of fern-cored hexagons

open access: yes, 2019
In this paper we enumerate the centrally symmetric lozenge tilings of a hexagon with a fern removed from its center. The proof is based on a variant of Kuo's graphical condensation method. An unexpected connection with the total number of tilings is established~---~when suitably normalized, the number of centrally symmetric tilings is equal to the ...
openaire   +2 more sources

Rhombus Tilings of a Hexagon with Two Triangles Missing on the Symmetry Axis

open access: yes, 1998
We compute the number of rhombus tilings of a hexagon with sides n, n, N, n, n, N, where two triangles on the symmetry axis touching in one vertex are removed.
Eisenkölbl, Theresia
core   +3 more sources

Tilings of Flat Tori by Congruent Hexagons

open access: yes
Convex hexagons that can tile the plane have been classified into three types. For the generic cases (not necessarily convex) of the three types and two other special cases, we classify tilings of the plane under the assumption that all vertices have degree $3$. Then we use the classification to describe the corresponding hexagonal tilings of flat tori
Yu, Xinlu, Wang, Erxiao, Yan, Min
openaire   +2 more sources

Tiling enumeration of doubly-intruded halved hexagons

open access: yes, 2017
Inspired by Propp's intruded Aztec diamond regions, we consider halved hexagons in which two aligned arrays of triangular holes have been removed from their boundaries. Unlike the intruded Aztec diamonds (whose numbers of domino tilings contain some large prime factors in their factorizations), the numbers of lozenge tilings of our doubly-intruded ...
openaire   +2 more sources

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