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Related papers: Tiling the Sphere with Regular Polygons

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We determine all non-edge-to-edge tilings of the sphere by regular spherical polygons of three or more sides.

Combinatorics · Mathematics 2021-01-27 Colin Adams , Cameron Edgar , Peter Hollander , Liza Jacoby

The edge-to-edge tilings of the sphere by congruent polygons, where all edges are straight, have been completely classified. We classify the curvilinear version of the similar triangular tilings, where the edges may not be straight, and…

Combinatorics · Mathematics 2026-01-14 Keyi Jin , Linming Lu , Erxiao Wang , Lijuan Wu , Min Yan

We completely classify edge-to-edge tilings of the sphere by congruent quadrilaterals. As part of the classification, we also present a modern version of the classification of edge-to-edge tilings of the sphere by congruent triangles.…

Combinatorics · Mathematics 2024-02-09 Ho Man Cheung , Hoi Ping Luk , Min Yan

We classify edge-to-edge tilings of the sphere by congruent pentagons with the edge combination $a^4b$ and with rational angles in degree: they are a one-parameter family of symmetric $a^4b$-pentagonal subdivisions of the tetrahedron with…

Combinatorics · Mathematics 2025-07-10 Jinjin Liang , Yixi Liao , Wenchuan Hu , Erxiao Wang

Edge-to-edge tilings of the sphere by congruent quadrilaterals are completely classified in a series of three papers. This second one applies the powerful tool of trigonometric Diophantine equations to classify the case of…

Combinatorics · Mathematics 2023-06-06 Yixi Liao , Erxiao Wang

The tilings of the 2-dimensional sphere by congruent triangles have been extensively studied, and the edge-to-edge tilings have been completely classified. However, not much is known about the tilings by other congruent polygons. In this…

Combinatorics · Mathematics 2013-01-07 Honghao Gao , Nan Shi , Min Yan

We classify the dihedral edge-to-edge tilings of the sphere by regular polygons and quadrilaterals with equal opposite edges (edge configuration xyxy).

Combinatorics · Mathematics 2024-03-12 Hoi Ping Luk

We classify edge-to-edge tilings of the sphere by congruent pentagons with the edge combination $a^4b$ and with any irrational angle in degree: they are three $1$-parameter families of pentagonal subdivisions of the Platonic solids, with…

Combinatorics · Mathematics 2024-12-12 Junjie Shu , Yixi Liao , Erxiao Wang

We develop the basic and new tools for classifying non-side-to-side tilings of the sphere by congruent triangles. Then we prove that, if the triangle has any irrational angle in degree, such tilings are: a sequence of 1-parameter families…

Combinatorics · Mathematics 2025-05-23 Wen Chen , Jinjin Liang , Erxiao Wang

We classify edge-to-edge tilings of the sphere by congruent almost equilateral pentagons, in which four edges have the same length. Together with our earlier classifications of edge-to-edge tilings of the sphere by congruent equilateral…

Combinatorics · Mathematics 2024-02-09 Hoi Ping Luk , Min Yan

The edge-to-edge tilings of the sphere by congruent quadrilaterals of Type $a^2bc$ are classified as $3$ classes: a sequence of two-parameter families of $2$-layer earth map tilings with $2n$ $(n\ge3)$ tiles, a one-parameter family of…

Combinatorics · Mathematics 2022-07-26 Yixi Liao , Pinren Qian , Erxiao Wang , Yingyun Xu

We study edge-to-edge tilings of the sphere by edge congruent pentagons, under the assumption that there are tiles with all vertices having degree 3. We develop the technique of neighborhood tilings and apply the technique to completely…

Metric Geometry · Mathematics 2013-04-16 Ka Yue Cheuk , Ho Man Cheung , Min Yan

We classify the dihedral edge-to-edge tilings of the sphere by regular polygons with gonality at least 5 and rhombi.

Combinatorics · Mathematics 2024-03-13 Ho Man Cheung , Hoi Ping Luk

In this paper we give a classification of tilings of the sphere by congruent quadrilaterals with exactly two equal edges. The tilings are the earth map tilings, $(p,q)$-earth map tilings and their flip modifications, and quadrilateral…

Combinatorics · Mathematics 2021-09-06 Ho Man Cheung , Hoi Ping Luk

Edge-to-edge tilings of the sphere by congruent quadrilaterals are completely classified in a series of three papers. This last one classifies the case of $a^3b$-quadrilaterals with some irrational angle: there are a sequence of…

Combinatorics · Mathematics 2023-06-06 Yixi Liao , Pinren Qian , Erxiao Wang , Yingyun Xu

A combinatorial tiling of the sphere is naturally given by an embedded graph. We study the case that each tile has exactly five edges, with the ultimate goal of classifying combinatorial tilings of the sphere by geometrically congruent…

Combinatorics · Mathematics 2014-05-13 Min Yan

Every simple quadrangulation of the sphere is generated by a graph called a pseudo-double wheel with two local expansions (Brinkmann et al. "Generation of simple quadrangulations of the sphere." Discrete Math., Vol. 305, No. 1-3, pp. 33-54,…

Metric Geometry · Mathematics 2012-10-08 Yohji Akama

We develop a systematic method for computing the angle combinations at all vertices in an edge-to-edge tiling of the sphere by pentagons with the same five angles. The method is a useful and necessary step in many tiling problems about…

Metric Geometry · Mathematics 2023-09-27 Hoi Ping Luk , Min Yan

We develop the basic tools for classifying edge-to-edge tilings of the sphere by congruent pentagons. Then we prove that, for the edge combination $a^2b^2c$, such tilings are three two-parameter families of pentagonal subdivisions of the…

Metric Geometry · Mathematics 2021-06-29 Erxiao Wang , Min Yan

We classify the dihedral edge-to-edge tilings of the sphere by squares and rhombi.

Combinatorics · Mathematics 2024-03-12 Hoi Ping Luk
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