English

New type Stirling like numbers - an email style letter

Combinatorics 2010-11-16 v1 Discrete Mathematics

Abstract

The notion of the Fibonacci cobweb poset from [1] has been naturally extended to any admissible sequence FF in [2] where it was also recognized that the celebrated prefab notion of Bender and Goldman [3] - (see also [4,5]) - admits such an extension so as to encompass the new type combinatorial objects from [2] as leading examples. Recently the present author had introduced also [6] two natural partial orders in there: one \leq in grading-natural subsets of cobweb`s prefabs sets [2] and in the second proposal one endows the set sums of the so called "prefabiants" with such another partial order that one arrives at Bell-like numbers including Fibonacci triad sequences introduced by the present author in [7]. Here we quote the basic observations concerning the new type Stirling like numbers as they appear in [6]. For more on notation, Stirling like numbers of the first kind and for proofs - see [6].

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Cite

@article{arxiv.0802.1382,
  title  = {New type Stirling like numbers - an email style letter},
  author = {A. K. Kwasniewski},
  journal= {arXiv preprint arXiv:0802.1382},
  year   = {2010}
}

Comments

3 pages

R2 v1 2026-06-21T10:11:23.861Z