TY - BOOK AU - Hsu,Timothy M. TI - Quilts: central extensions, braid actions, and finite groups T2 - Lecture notes in mathematics SN - 3540673970 PY - 2000/// CY - Berlin , New York PB - Springer KW - Finite groups KW - Group extensions (Mathematics) KW - Braid theory N1 - Includes bibliographical references (p. [179]-182) and index UR - http://www.loc.gov/catdir/enhancements/fy0816/00038828-d.html UR - http://www.loc.gov/catdir/enhancements/fy0816/00038828-t.html ER -