pp 1-5 April 1989

Zassenhaus conjecture forA₅

I S Luthar I B S Passi

pp 7-15 April 1989

Aperiodic rings, necklace rings and Witt vectors—II

K Varadarajan

pp 17-25 April 1989

Classification of isolated complete intersection singularities

A J Parameswaran

pp 27-48 April 1989

Quasiminimal invariants for foliations of orientable closed surfaces

William A Veech

pp 49-73 April 1989

Positive solutions of the semilinear Dirichlet problem with critical growth in the unit disc in ℝ²

Adimurthi

pp 75-83 April 1989

A softer, stronger Lidskii theorem

Rajendra Bhatia John A R Holbrook

pp 85-92 April 1989

On unbounded subnormal operators

Arvind B Patel Subhash J Bhatt

pp 93-101 April 1989

Thermohaline convection with cross-diffusion in an anisotropic porous medium

Prabhamani R Patil C P Parvathy