Columbia subject headings:
Geodesics (Mathematics)
Geometry, Algebraic.
Geometry, Differential.
Geometry, Riemannian.
Geometry--Foundations.
Harvard subject headings:
Geodesics (Mathematics)
Geometry, Algebraic.
Geometry, Differential.
Geometry--Foundations
Princeton subject headings:
Geometry, Algebraic.
Geometry, Riemannian.
Geometry.
Global differential geometry.