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[en] Several important aspects of the Nelson-Erdos-Hadwiger classical problem of combinatorial geometry are considered. In particular, new lower bounds are obtained for the chromatic numbers of the spaces Rn and Qn with two, three or four forbidden distances. Bibliography: 28 titles
Journal
Sbornik. Mathematics; ISSN 1064-5616; 
; v. 199(4); p. 579-612
; v. 199(4); p. 579-612