genus c | 69, orientable |
Schläfli formula c | {278,139} |
V / F / E c | 2 / 1 / 139 |
notes | ![]() ![]() ![]() |
vertex, face multiplicity c | 139, 278 |
139, each with 2 edges | |
rotational symmetry group | 278 elements. |
full symmetry group | 556 elements. |
its presentation c | < r, s, t | t2, rs2r, (s, r), (st)2, (rt)2, s‑1r121s‑2tr‑1s8r‑1ts‑2rtr‑2t > |
C&D number c | R69.50′ |
The statistics marked c are from the published work of Professor Marston Conder. |
It is a member of series α' .
List of regular maps in orientable genus 69.
Orientable | |
Non-orientable |
Groups of order 4 6 8 9 10 12 14 15 16 18 20 21 22 24 25 27 28 30 48 60 120 168 336 360 720