Pinren Qian

collaborators

2 papers

math.CO2022

Tilings of the sphere by congruent quadrilaterals III: edge combination $a^{3} b$ with general angles

Yixi Liao, Pinren Qian, Erxiao Wang +1

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 $a^{3} b$ -quadrilaterals wit…

math.CO2021

Tilings of the sphere by congruent quadrilaterals I: edge combination $a^{2} b c$

Yixi Liao, Pinren Qian, Erxiao Wang +1

The edge-to-edge tilings of the sphere by congruent quadrilaterals of Type $a^{2} b c$ are classified as $3$ classes: a sequence of two-parameter families of $2$ -layer earth map tiling…

Tilings of the sphere by congruent quadrilaterals III: edge combination a3b with general angles

Tilings of the sphere by congruent quadrilaterals I: edge combination a2bc

Tilings of the sphere by congruent quadrilaterals III: edge combination $a^{3} b$ with general angles

Tilings of the sphere by congruent quadrilaterals I: edge combination $a^{2} b c$