Bell polynomial
plural of yokelry
present participle of absent
(combinatorics) Any member of a certain class of polynomials used in the study of set partitions, and related to Stirling numbers and Bell numbers.
(entomology) Any grasshopper in the Pyrgomorphidae.
ベル多項式は組合せ論において集合の分割とスターリング数の関係を簡潔に表現するために用いられます。
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