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Planarity Of Whitney Levels, Jorbe Bustamante, W. J. Charatonik, Raul Escobedo
Planarity Of Whitney Levels, Jorbe Bustamante, W. J. Charatonik, Raul Escobedo
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First, we characterize all locally connected continua whose all Whitney levels are planar. Second, we show by example that planarity is not a (strong) Whitney reversible property. This answers a question from Illanes-Nadler book [2].