Search Results - "Burgess, Andrea C"
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1
Existential Closure in Line Graphs
Published in Graphs and combinatorics (01-10-2024)“…A graph is n - existentially closed if, for all disjoint sets of vertices A and B with | A ∪ B | = n , there is a vertex z not in A ∪ B adjacent to each vertex…”
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2
The edge‐connectivity of vertex‐transitive hypergraphs
Published in Journal of graph theory (01-02-2024)“…A graph or hypergraph is said to be vertex‐transitive if its automorphism group acts transitively upon its vertices. A classic theorem of Mader asserts that…”
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Journal Article -
3
The firebreak problem
Published in Networks (01-04-2021)“…Suppose we have a network that is represented by a graph G. Potentially a fire (or other type of contagion) might erupt at some vertex of G. We are able to…”
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4
Colouring even cycle systems
Published in Discrete mathematics (28-03-2008)“…An m-cycle system of order n is a partition of the edges of the complete graph K n into m-cycles. An m-cycle system S is said to be weakly k-colourable if its…”
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5
Generalized packing designs
Published in Discrete mathematics (06-06-2013)“…Generalized t-designs, which form a common generalization of objects such as t-designs, resolvable designs and orthogonal arrays, were defined by Cameron [P.J…”
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Journal Article -
6
On generalized Howell designs with block size three
Published in Designs, codes, and cryptography (01-11-2016)“…In this paper, we examine a class of doubly resolvable combinatorial objects. Let t , k , λ , s and v be nonnegative integers, and let X be a set of v symbols…”
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Packing Designs with large block size
Published 29-10-2024“…Given positive integers $v,k,t$ and $\lambda$ with $v \geq k \geq t$, a {packing design} PD$_{\lambda}(t,k,v)$ is a pair $(V,\mathcal{B})$, where $V$ is a…”
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8
Existential Closure in Uniform Hypergraphs
Published 08-07-2024“…For a positive integer $n$, a graph with at least $n$ vertices is $n$-existentially closed or simply $n$-e.c. if for any set of vertices $S$ of size $n$ and…”
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9
Extending Graph Burning to Hypergraphs
Published 01-03-2024“…Graph burning is a round-based game or process that discretely models the spread of influence throughout a network. We introduce a generalization of graph…”
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10
Proportion-Based Hypergraph Burning
Published 12-08-2024“…Graph burning is a discrete process that models the spread of influence through a network using a fire as a proxy for the type of influence being spread. This…”
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Journal Article -
11
Existential Closure in Line Graphs
Published 02-11-2022“…A graph $G$ is {\it $n$-existentially closed} if, for all disjoint sets of vertices $A$ and $B$ with $|A\cup B|=n$, there is a vertex $z$ not in $A\cup B$…”
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Journal Article -
12
Generalized covering designs and clique coverings
Published in Journal of combinatorial designs (01-09-2011)“…Inspired by the “generalized t‐designs” defined by Cameron [P. J. Cameron, Discrete Math 309 (2009), 4835–4842], we define a new class of combinatorial designs…”
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Journal Article -
13
Weak colourings of Kirkman triple systems
Published 09-04-2024“…A $\delta$-colouring of the point set of a block design is said to be {\em weak} if no block is monochromatic. The {\em weak chromatic number} $\chi(S)$ of a…”
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14
The Edge-Connectivity of Vertex-Transitive Hypergraphs
Published 15-07-2022“…A graph or hypergraph is said to be vertex-transitive if its automorphism group acts transitively upon its vertices. A classic theorem of Mader asserts that…”
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Journal Article -
15
Mutually orthogonal cycle systems
Published 01-03-2022“…An ${\ell}$-cycle system ${\mathcal F}$ of a graph $\Gamma$ is a set of ${\ell}$-cycles which partition the edge set of $\Gamma$. Two such cycle systems…”
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Journal Article -
16
Distance-Restricted Firefighting on Finite Graphs
Published 21-06-2023“…In the classic version of the game of firefighter, on the first turn a fire breaks out on a vertex in a graph $G$ and then $b$ firefighters protect $b$…”
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17
Cops that surround a robber
Published 05-08-2021“…We introduce the game of Surrounding Cops and Robbers on a graph, as a variant of the original game of Cops and Robbers. In contrast to the original game in…”
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Journal Article -
18
The Firebreak Problem
Published 11-05-2020“…Suppose we have a network that is represented by a graph $G$. Potentially a fire (or other type of contagion) might erupt at some vertex of $G$. We are able to…”
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Journal Article -
19
Coloring 4-cycle systems
Published in Journal of combinatorial designs (01-01-2006)“…An m‐cycle system of order n is a partition of the edges of the complete graph Kn into m‐cycles. We investigate k‐colorings of 4‐cycle systems in which no…”
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Journal Article -
20
Generalized packing designs
Published 20-07-2011“…Generalized $t$-designs, which form a common generalization of objects such as $t$-designs, resolvable designs and orthogonal arrays, were defined by Cameron…”
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Journal Article