Columbia subject headings:
Elliptic operators--Congresses.
Foliations (Mathematics)--Congresses.
Index theory (Mathematics)--Congresses.
Operator algebras--Congresses.
Harvard subject headings:
Elliptic operators--Congresses.
Foliations (Mathematics)--Congresses.
Index theory (Mathematics)--Congresses.
Operator algebras--Congresses.
Princeton subject headings: