01238nam a2200337 i 450099100090868970753620020507175643.0991025s1998 us ||| | eng 0387984976b10774233-39ule_instLE01304157ExLDip.to Matematicaeng511.5AMS 01A55AMS 01A60AMS 05-03QA618.12.F513Fritsch, Rudolf59362The four color theorem :history, topological foundations and idea of proof /Rudolf Fritsch, Gerda FritschNew York :Springer-Verlag,c1998xvi, 260 p. :ill. ;24 cm.Includes bibliographical references (p. 231-247) and indexFour-color problemFritsch, Gerdaauthorhttp://id.loc.gov/vocabulary/relators/aut725821Der Vierfarbensatz.b1077423321-09-0628-06-02991000908689707536LE013 05-XX FRI11 (1998)12013000117690le013-E0.00-l- 03030.i1087300428-06-02Four color theorem1455589UNISALENTOle01301-01-99ma -engus 41