Peter Schneider is a poet and psychotherapist who lives in Brooklyn, NY and Rochester, VT. His poems have appeared or are forthcoming in AMP: The Journal of Digital Literature (Hofstra University); The Buddhist Poetry Review; Mobius: The Journal of Social Change; The Shot-glass Journal; Kairos; and in the broadside collection, A Midnight Snack. His MFA is from Columbia University School of the Arts and his PhD is in clinical psychology from New York University.

A detailed and self-contained introduction to a key part of local number theory, ideal for graduate students and researchers.

Preface; Overview; 1. Relevant constructions; 2. (¿L, ¿L-modules); 3. An equivalence of categories; 4. Further topics; References; Notation; Subject index.