Columbia subject headings:
Functional analysis--Congresses.
Operator theory--Congresses.
Harvard subject headings:
Approximation theory--Congresses
Fourier analysis--Congresses.
Functional analysis--Congresses.
Global analysis (Mathematics).
Harmonic analysis--Congresses.
Mathematics
Operator theory--Congresses.
Singh, Udita Narayana, 1917-1989--Congresses.
Topological Groups.
Princeton subject headings:
Functional analysis--Congresses.
Operator theory--Congresses.