English

Tilings of the sphere by congruent regular triangles and congruent rhombi

Combinatorics 2023-11-27 v2

Abstract

All edge-to-edge tilings of the sphere by congruent regular triangles and congruent rhombi are classified as: (1) a 11-parameter family of protosets each admitting a unique (2a3,3a4)(2a^3,3a^4)-tiling like a triangular prism; (2) a 11-parameter family of protosets each admitting 2 different (8a3,6a4)(8a^3,6a^4)-tilings like a cuboctahedron and a triangular orthobicupola respectively; (3) a sequence of protosets each admitting a unique (2a3,(6n3)a4)(2a^3,(6n-3)a^4)-tiling like a generalized anti-triangular prism for each n3n\ge3; (4) 26 sporadic protosets, among which nineteen admit a unique tiling, one admits 3 different tilings, one admits 5 different tilings, three admit 2 different tilings, two admit too many tilings to count. The moduli of parameterized tilings and all geometric data are provided.

Keywords

Cite

@article{arxiv.2311.01183,
  title  = {Tilings of the sphere by congruent regular triangles and congruent rhombi},
  author = {Qi Yuan and Erxiao Wang},
  journal= {arXiv preprint arXiv:2311.01183},
  year   = {2023}
}

Comments

37 pages, 53 figures, 9 tables