Published by Duke University Press since its inception in 1935, the Duke Mathematical Journal is one of the world's leading mathematical journals. Without specializing in a small number of subject areas, it emphasizes the most active and influential areas of current mathematics.

### Volume 47, Number 1

#### Publication Date: March 1980

Notes on homological algebra and representations of Lie algebras

T. J. Enright and N. R. Wallach; 1-15

Singular solutions for analytic pseudodifferential operators of principal type

Nicholas Hanges; 17-25

A note on the $\Gamma$-spectrum of an automorphism group

Richard H. Herman and Roberto Longo; 27-32

Invariants of the NPT isotopy classes of Morse-Smale diffeomorphisms of surfaces

Paul R. Blanchard; 33-46

Normal automorphisms of absolute Galois groups of $\mathfrak{p}$-adic fields

Moshe Jarden and Jürgen Ritter; 47-56

Spectral properties of Schrödinger operators and time-decay of the wave functions results in $L^2(\mathbf{R}^m),m \geq 5$

Arne Jensen; 57-80

Boundary values and estimates for holomorphic functions of several complex variables

Steven G. Krantz; 81-98

Whittaker models for real groups

Freydoon Shahidi; 99-125

A non-compact version of Plücker’s second equation

J. R. Quine and Paul Yang; 127-134

A smoothing property of the Henkin and Szegö projections

Patrick Ahern and Robert Schneider; 135-143

Real structure in the hyperfinite factor

Erling Størmer; 145-153

On a class of pseudo-differential operators with double characteristics

Paul Godin; 155-169

On Enss’ approach to scattering theory

E. B. Davies; 171-185

Mellin transforms and scattering theory I. Short range potentials

Peter A. Perry; 187-193

Hypoellipticite analytique sur des groupes nilpotents de rang $2$

Guy Metivier; 195-221

The non-vanishing of certain Hecke $L$-functions at the center of the critical strip

David E. Rohrlich; 223-232

On the variety of special linear systems on a general algebraic curve

Phillip Griffiths and Joseph Harris; 233-272