Columbia subject headings:
Cobordism theory.
Geometry, Riemannian.
Homology theory.
K-theory.
Partial differential operators.
Spaces of constant curvature.
Harvard subject headings:
K-theory.
Topological transformation groups.
Princeton subject headings:
Cobordism theory.
Geometry, Riemannian.
Homolohy theory
K-theory.
Partial differential operators.
Spaces of constant curvature.