D. Yaqubi

activity

20142026

most citedSome properties of Zumkeller numbers and

k

-layered numbers

6 citations · 6 across the 12 of their papers we have counts for

collaborators

Showing 2015Show all

2 papers · 1 filter

math.CO2015

Spanning k-ended trees of 3-regular connected graphs

Hamed Ghasemian Zoeram, Daniel Yaqubi

A tree is called k-ended tree if it has at most k leaves, where a leaf is a vertex of degree one. In this paper we prove that every 3-regular connected graph with n vertices such t…

math.CO2015

The Twelvefold way, the non-intersecting circles problem, and partitions of multisets

Toufik Mansour, Madjid Mirzavaziri, Daniel Yaqubi

Let $n$ be a non-negative integer and $A = {a_{1}, \dots, a_{k}}$ be a multi-set with $k$ not necessarily distinct members, where $a_{1} ⩽ \dots ⩽ a_{k}$ . We denote by $Δ(n,A)…