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 100, Number 2

#### Publication Date: 15 November 1999

Set-theoretical solutions to the quantum Yang-Baxter equation

Pavel Etingof, Travis Schedler and Alexandre Soloviev; 169-209

The distribution of spacings between quadratic residues

Pär Kurlberg and Zeév Rudnick; 211-242

Lifting cusp forms on ${\text{GL}}_{2n}$ to $\widetilde{{\text{Sp}}}_{2n}$: The unramified correspondence

David Ginzburg, Stephen Rallis and David Soudry; 243-266

On the decomposition matrices of the quantized Schur algebra

Michela Varagnolo and Eric Vasserot; 267-297

Factorization through matrix spaces for finite rank operators between $C^*$-algebras

Marius Junge and Christian Le Merdy; 299-319

Rigidity results for groups with radical cohomology of finite groups and arithmeticity problems

Fritz Grunewald and Vladimir Platonov; 321-358

On the Futaki invariants of complete intersections

Zhiqin Lu; 359-372