Columbia subject headings:
Automorphic functions.
Bieberbach groups.
Riemann surfaces.
Riemannian manifolds.
Harvard subject headings:
Automorphic functions.
Bieberbach groups.
Cell aggregation--Mathematics.
Group theory
Mathematics.
Riemann surfaces.
Riemannian manifolds.
Princeton subject headings:
Automorphic functions.
Bieberbach groups.
Riemann surfaces.
Riemannian manifolds.