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edited Oct 18, 2016 at 13:01

In George W. Tokarsky's Polygonal Rooms Not Illuminable from Every PointPolygonal Rooms Not Illuminable from Every Point (1995) it is stated that the problem

Is a polygonal region illuminable from at least one point in the region?

was still open at the time. What is its current state? Has it been settled or is it still open?

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asked Oct 18, 2016 at 9:49

Current state of Straus's illumination problem

In George W. Tokarsky's Polygonal Rooms Not Illuminable from Every Point (1995) it is stated that the problem

Is a polygonal region illuminable from at least one point in the region?

was still open at the time. What is its current state? Has it been settled or is it still open?

open-problems billiards