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- Gábor Nyul, Gabriella Rácz
- Discrete Mathematics
- 2015

In this paper we present a detailed study of r -Lah numbers, which give the number of partitions of a finite set into a fixed number of nonempty ordered subsets such that r distinguished elements… (More)

- Zsófia Kereskényi-Balogh, Gábor Nyul
- Australasian J. Combinatorics
- 2014

In this paper we summarize the known properties of Stirling numbers of the second kind and Bell numbers for graphs, and we also prove new results about them. These give us an alternative way to study… (More)

- Balázs Nyul, Gábor Nyul
- 2013

In our paper we find all functions $${f : \mathbb {R} \times \mathbb {R}^{3} \rightarrow \mathbb {H}}$$ and $${g : \mathbb {R}^{3} \rightarrow \mathbb {H}}$$ satisfying $${f (r, {\bf v}) f (s, {\bf… (More)

- Gábor Nyul, Bettina Rauf
- 2011

For suitable integers α, γ and f : [3,+∞[ ∩ Z → [0,+∞[ ∩ Z, denote by w(Rα,γ,f , k, r) the least positive integer such that for any r-colouring of [1, w(Rα,γ,f , k, r)] ∩ Z, there exists a… (More)

- Gábor Nyul, Bettina Rauf
- 2015

We prove some existence and non-existence results on van der Waerden type numbers for linear recurrence sequences with constant positive integer coefficients.

- Csanád Bertók, Gábor Nyul
- Contributions to Discrete Mathematics
- 2017

- Eszter Gyimesi, Gábor Nyul
- Discrete Applied Mathematics
- 2019

Abstract T. A. Dowling introduced Whitney numbers of the first and second kinds concerning the so-called Dowling lattices of finite groups. It turned out that they are generalizations of Stirling… (More)

- Csanád Bertók, Gábor Nyul
- 2017

In this paper we prove some van der Waerden type theorems for linear recurrence sequences. Under the assumption $a_{i-1}\leq a_{i}a_{s-1}$ ($i=2,\ldots,s$), we extend the results of G. Nyul and B.… (More)

- Eszter Gyimesi, Gábor Nyul
- 2013

In this note we prove directly that Golomb’s method and the continued fraction method are essentially the same, in the sense that they give the same Egyptian fraction expansions of positive rational… (More)

- Gábor Nyul
- 2014

The purpose of the present paper is to solve the pexiderized versions of functional equations investigated by B. Nyul and G. Nyul [2], raised by the connection between products of quaternions and… (More)