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À la recherche de la preuve perdue: a simple proof of the Ficken theorem
2014
Annales Universitatis Paedagogicae Cracoviensis: Studia Mathematica
Preserved Fulltext
A new proof of the Ficken criterion is given together with a comment concerning the known proofs and related results
doi:10.2478/aupcsm-2014-0010
fatcat:vus3bsxciffi7d35hv3ou5gs6e