Columbia subject headings:
Geometry, Differential--Congresses.
Noncommutative algebras--Congresses.
Operator algebras--Congresses.
Quantum field theory--Congresses.
Harvard subject headings:
Princeton subject headings:
Geometry, Differential--Congresses.
Noncommutative algebras--Congresses.
Operator algebras--Congresses.
Quantum field theory--Congresses.