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Opposing Half Guards
Published 10 Jul 2022 in cs.CG | (2207.04474v1)
Abstract: We study the art gallery problem for opposing half guards: guards that can either see to their left or to their right only. We present art gallery theorems, show that the location of half guards in 2-guardable polygons is not restricted to extensions, show that the problem is NP-hard in monotone polygons, and present approximation algorithms for spiral and staircase polygons.
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