%0 Journal Article %T Simple proof of Zermelo's theorem %A V. V. Filippov %A E. Yu. Mychka %J Mathematics %D 2011 %I arXiv %X Most of the assertions in the theory of well ordered sets are quite simple. However, one of its central statements, Zermelo's theorem, stands out of this rule, for its well-known proofs are rather complicated. The aim of the current paper is to propose a simple proof of this theorem. Please inform us if you ever encountered such a proof. %U http://arxiv.org/abs/1111.6991v2