Kreweras considered the problem of counting noncrossing partitions of the set {1, 2,..., n}, whose elements are arranged into a cycle in its natural order, into p parts of given sizes n1, n2, ⋯ , np ...
This is a preview. Log in through your library . Journal Information PNAS is the world's most-cited multidisciplinary scientific serial. It publishes high-impact research reports, commentaries, ...
FISHER 1 in 1930 stated his “fundamental theorem of natural selection” in the form: “The rate of increase in fitness of any organism at any time is equal to its genetic variance in fitness at that ...
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