
 Topology 
  Excellent, wellwritten introductory text covers the algebra of subsets and of rings and fields of sets, complementation and ideal theory in the distributive lattice, closure function, neighborhood topology, topological maps, the derived set in T1space and the topological product, much more. 
  Fresh approach explains nontrivial applications of metric space topology to analysis; topics from elementary algebraic topology focus on concrete results with minimal formalism. 
  Comprehensive coverage of elementary general topology as well as algebraic topology, specifically 2manifolds, covering spaces and fundamental groups. 
 www.doverdirect.com /0486656764.html (297 words) 
