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 92, Number 1

#### Publication Date: 15 March 1998

Asymptotic of the density of states for the Schrödinger operator with periodic electric potential

Bernard Helffer and Abderemane Mohamed; 1-60

Higher regulators, Hilbert modular surfaces, and special values of $L$-functions

Guido Kings; 61-127

Lifting of characters on orthogonal and metaplectic groups

Module de congruences pour $\mathrm{GL}(2)$ d’un corps imaginaire quadratique et théorie d’Iwasawa d’un corps CM biquadratique