Columbia subject headings:
Topology--Congresses.
Harvard subject headings:
Continuity--Congresses.
Decomposition (Mathematics)--Congresses.
Manifolds (Mathematics)--Congresses.
Topology--Congresses
Princeton subject headings:
Continuity--Congresses.
Decomposition (Mathematics)--Congresses.
Manifolds (Mathematics)--Congresses.
Topology--Congresses.