2004/11/14 by Lee Rudolph · 2 citations
Mathematics · #math.GT #msc:57M25
paper · pdf · doi:10.1016/0040-9383(83)90031-9
published as Topology, vol. 22, no. 2, pp. 191-202, 1983 · 12 pages, 2 figures
arxiv created 2004/11/14 · arxiv updated 2009/12/01
This article was originally published in Topology 22 (1983). The present hyperTeXed redaction includes references to post-1983 results as Addenda, and corrects a few typographical errors. (See math.GT/0411115 for a more comprehensive overview of the subject as it appears 21 years later.)