کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8903685 1632911 2019 28 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Restricted Stirling and Lah number matrices and their inverses
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات ریاضیات گسسته و ترکیبات
پیش نمایش صفحه اول مقاله
Restricted Stirling and Lah number matrices and their inverses
چکیده انگلیسی
If we have 1,2∈R and if for all n∈R with n odd and n≥3, we have n±1∈R, we additionally show that each entry of [{nk}R]n,k≥1−1, [[nk]R]−1n,k≥1 and [L(n,k)R]n,k≥1−1 is up to an explicit sign the cardinality of a single explicitly defined family of labeled forests. With R as before we also do the same for restriction sets of the form R(d)={d(r−1)+1:r∈R} for all d≥1. Our results also provide combinatorial interpretations of the kth Whitney numbers of the first and second kinds of Πn1,d, the poset of partitions of [n] that have each part size congruent to 1 mod d.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Combinatorial Theory, Series A - Volume 161, January 2019, Pages 271-298
نویسندگان
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