9 citations · 11 across the 9 of their papers we have counts for
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Partial degenerate Stirling numbers
Beáta Bényi, Sithembele Nkonkobe
In this paper, we study some combinations of the degenerate and incomplete Stirling numbers of the second kind. We use a combinatorial approach and provide some asymptotic results.
The Telephone Exchange Problem Revisited: A Combinatorial Approach
Sithembele Nkonkobe
In this study we revisit the telephone exchange problem. We discuss a generalization of the telephone exchange problem by discuss two generalizations of the Bessel polynomials. We…
A Combinatorial Analysis Of Higher Order Generalised Geometric Polynomials: A Generalisation Of Barred Preferential Arrangements
Sithembele Nkonkobe, Beáta Bényi, Roberto B. Corcino +1
A barred preferential arrangement is a preferential arrangement, onto which in-between the blocks of the preferential arrangement a number of identical bars are inserted. We offer…
Generalised Barred Preferential Arrangements
Sithembele Nkonkobe, Venkat Murali, Béata Bényi
A barred preferential arrangement is a preferential arrangement onto which a number of identical bars are inserted in between the blocks of the preferential arrangement. In this st…
On some properties and relations between restricted barred preferential arrangements, multi-poly-Bernoulli numbers and related numbers
S. Nkonkobe, V. Murali
The introduction of bars in-between blocks of an ordered set partition(preferential arrangement) results in a barred ordered set partition(barred preferential arrange- ment). Havin…
On Some Identities of Barred Preferential Arrangements
S. Nkonkobe, V. Murali
A preferential arrangement of a finite set is an ordered partition. Associated with each such ordered partition is a chain of subsets or blocks endowed with a linear order. The cha…
A study of a family of generating functions of Nelsen-Schmidt type and some identities on restricted barred preferential arrangements
S. Nkonkobe, V. Murali
A preferential arrangement of a set is an ordered partition of the set induced with a linear order. Separation of blocks of a preferential arrangement wit…