511 General principles of mathematics
511.6 Combinatorics (Combinatorial analysis)
511.62 Enumeration 511.64 Permutations and combinations 511.65 Choice 511.66 Extremal combinatorics de
511 Allgemeine mathematische Prinzipien
511.6 Kombinatorik (Kombinatorische Analysis)
511.62 Abzählen 511.64 Permutationen 511.65 Auswahl 511.66 Extremale Kombinatorik
Dewey Decimal Classification
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