This paper offers a systematic approach to all mathematical theories with local/global behavior. To build objects with local and global aspects, on begins with

The basic definitions and properties of vertex operator algebras, modules, intertwining operators and related concepts are presented, following a fundamental an

"July 1993, volume 104, number 497 (fourth of 6 numbers)."

This work studies abelian branched coverings of smooth complex projective surfaces from the topological viewpoint. Geometric information about the coverings (su

Obstruction theoretic methods are introduced into isovariant homotopy theory for a class of spaces with group actions; the latter includes all smooth actions of