Pi/2-Angle Yao Graphs are Spanners
arXiv:1001.2913 · doi:10.1142/S0218195912600047
Abstract
We show that the Yao graph Y4 in the L2 metric is a spanner with stretch factor 8(29+23sqrt(2)). Enroute to this, we also show that the Yao graph Y4 in the Linf metric is a planar spanner with stretch factor 8.
20 pages, 9 figures