作者: Richard Schmied , Marek Karpinski
DOI:
关键词: Upper and lower bounds 、 Mathematics 、 Bounded function 、 Discrete mathematics 、 Combinatorics 、 Metric (mathematics)
摘要: We develop a new method for proving explicit approximation lower bounds TSP problems with bounded metrics improving on the best up to now known bounds. They almost match unbounded metric problems. In particular, we prove bound equal 4.