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机译:Clustering polar curves
Air Force Inst Technol, Ul Ksiecia Boleslawa 6, PL-01494 Warsaw, Poland;
Univ Sydney, Sch Math & Stat, Sydney, NSW 2006, Australia;
Univ Lille, Math, UMR CNRS 8524, F-59655 Villeneuve D'Ascq, France;
Topological equivalence of functions; Polar curves; Lipschitz invariants;