most recent 30 from http://mathoverflow.net 2013-05-21T10:36:06Z http://mathoverflow.net/feeds/user/20459 http://www.creativecommons.org/licenses/by-nc/2.5/rdf http://mathoverflow.net/questions/71683/alternative-proofs-of-the-krylov-bogolioubov-theorem/85277#85277 Igor F 2012-01-09T19:00:59Z 2012-01-09T19:00:59Z

<p>Please check Krasnosel'skii, M.A.; Lifshits, Je.A.; Sobolev, A.V. (1990), Positive Linear Systems: The method of positive operators, Sigma Series in Applied Mathematics,</p> <p>Krasnoselskii told me that he presented his argument at Bogolubov's seminar in 1949?</p>