5 citations · 11 across the 7 of their papers we have counts for
6 papers · 1 filter
A survey of repositories in graph theory
Srinibas Swain, C. Paul Bonnington, Graham Farr +1
Since the pioneering work of R. M. Foster in the 1930s, many graph repositories have been created to support research in graph theory. This survey reviews many of these graph repos…
Non-separating Planar Graphs
Hooman R. Dehkordi, Graham Farr
A graph is a non-separating planar graph if there is a drawing of on the plane such that (1) no two edges cross each other in and (2) for any cycle in , any…
Factorisation of Greedoid Polynomials of Rooted Digraphs
Kai Siong Yow, Kerri Morgan, Graham Farr
Gordon and McMahon defined a two-variable greedoid polynomial for any greedoid . They studied greedoid polynomials for greedoids associated with rooted graphs and…
Tutte Invariants for Alternating Dimaps
Kai Siong Yow, Graham Farr, Kerri Morgan
An alternating dimap is an orientably embedded Eulerian directed graph where the edges incident with each vertex are directed inwards and outwards alternately. Three reduction oper…
Powerful sets: a generalisation of binary matroids
Graham E. Farr, Andrew Y. Z. Wang
A set of binary vectors, with positions indexed by , is said to be a \textit{powerful code} if, for all , the number of vectors in that a…
The Sprague-Grundy function for some nearly disjunctive sums of Nim and Silver Dollar games
Graham Farr, Nhan Bao Ho
We introduce and analyse an extension of the disjunctive sum operation on some classical impartial games. Whereas the disjunctive sum describes positions formed from independent su…