Could anyone provide an example of an (essential) hyperplane arrangement whose bounded region is not star-shaped? (Appears as exercise 4.29 in "Oriented Matroids". Hint: six lines in the plane are enough).
2026-03-25 16:00:28.1774454428
Example of an hyperplane arrangement whose bounded region is not star-shaped
83 Views Asked by Bumbble Comm https://math.techqa.club/user/bumbble-comm/detail At
1
It seems the following example is suitable.