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math.CO2018
Symmetry Type Graphs on 4-Orbit maps
John A. Arredondo, Camilo Ramírez Maluendas, Luz Edith Santos Guerrero
It is well known that there exist twenty two symmetry type graphs associated to 4-orbit maps. For this ones we give the feasible values taken by the degree of the vertices and the…
math.CO2015
On infinite regular and chiral maps
John A. Arredondo, Camilo Ramírez y Ferrán Valdez
We prove that infinite regular and chiral maps take place on surfaces with at most one end. Moreover, we prove that an infinite regular or chiral map on an orientable surface with…