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20012024
most citedThe COS-Halos Survey: Physical Conditions and Baryonic Mass in the Low-Redshift Circumgalactic Medium

573 citations

Showing math.COShow all

13 papers · 1 filter

math.CO2017★ 1 cited

Edge-outer graph embedding and the complexity of the DNA reporter strand problem

M. N. Ellingham, Joanna A. Ellis-Monaghan

In 2009, Jonoska, Seeman and Wu showed that every graph admits a route for a DNA reporter strand, that is, a closed walk covering every edge either once or twice, in opposite direc…

math.CO2014★ 2 cited

A note on recognizing an old friend in a new place: list coloring and the zero-temperature Potts model

Joanna A. Ellis-Monaghan, Iain Moffatt

Here we observe that list coloring in graph theory coincides with the zero-temperature antiferromagnetic Potts model with an external field. We give a list coloring polynomial that…

math.CO2013

The Las Vergnas Polynomial for embedded graphs

Joanna A. Ellis-Monaghan, Iain Moffatt

The Las Vergnas polynomial is an extension of the Tutte polynomial to cellularly embedded graphs. It was introduced by Michel Las Vergnas in 1978 as special case of his Tutte polyn…

math.CO2013★ 18 cited

DNA origami and the complexity of Eulerian circuits with turning costs

Joanna A. Ellis-Monaghan, Andrew McDowell, Iain Moffatt +1

Building a structure using self-assembly of DNA molecules by origami folding requires finding a route for the scaffolding strand through the desired structure. When the target stru…

math.CO2011★ 23 cited

A Penrose polynomial for embedded graphs

Joanna A. Ellis-Monaghan, Iain Moffatt

We extend the Penrose polynomial, originally defined only for plane graphs, to graphs embedded in arbitrary surfaces. Considering this Penrose polynomial of embedded graphs leads t…

math.CO2010★ 18 cited

The Tutte-Potts connection in the presence of an external magnetic field

Joanna A. Ellis-Monaghan, Iain Moffatt

The classical relationship between the Tutte polynomial of graph theory and the Potts model of statistical mechanics has resulted in valuable interactions between the disciplines.…

math.CO2009★ 43 cited

Twisted duality for embedded graphs

Joanna A. Ellis-Monaghan, Iain Moffatt

We consider two operations on an edge of an embedded graph (or equivalently a ribbon graph): giving a half-twist to the edge and taking the partial dual with respect to the edge. T…

math.CO2009★ 4 cited

A recipe theorem for the topological Tutte polynomial of Bollobas and Riordan

Joanna A. Ellis-Monaghan, Irasema Sarmiento

In [A polynomial invariant of graphs on orientable surfaces, Proc. Lond. Math. Soc., III Ser. 83, No. 3, 513-531 (2001)] and [A polynomial of graphs on surfaces, Math. Ann. 323, 81…

math.CO2008★ 12 cited

Graph polynomials and their applications II: Interrelations and interpretations

Joanna Ellis-Monaghan, Criel Merino

This paper surveys a comprehensive, although not exhaustive, sampling of graph polynomials with the goal of providing a brief overview of a variety of techniques defining a graph p…

math.CO2008★ 56 cited

A Little Statistical Mechanics for the Graph Theorist

L. Beaudin, J. Ellis-Monaghan, G. Pangborn +1

In this survey, we give a friendly introduction from a graph theory perspective to the q-state Potts model, an important statistical mechanics tool for analyzing complex systems in…

math.CO2008★ 24 cited

Graph polynomials and their applications I: The Tutte polynomial

Joanna Ellis-Monaghan, Criel Merino

In this survey of graph polynomials, we emphasize the Tutte polynomial and a selection of closely related graph polynomials. We explore some of the Tutte polynomial's many properti…

math.CO2007

Unit Rectangle Visibility Graphs

Alice Dean, Joanna A. Ellis-Monaghan, Sarah Hamilton +1

Over the past twenty years, rectangle visibility graphs have generated considerable interest, in part due to their applicability to VLSI chip design. Here we study unit rectangle v…

math.CO2006★ 4 cited

Distance Hereditary Graphs and the Interlace Polynomial

Joanna A. Ellis-Monaghan, Irasema Sarmiento

The vertex-nullity interlace polynomial of a graph, described by Arratia, Bollobás and Sorkin as evolving from questions of DNA sequencing, and extended to a two-variable interlace…