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The chromatic profile of locally bipartite graphs
Published 2022“…Here we study the chromatic profile of locally bipartite graphs. We show that every <i>n</i>-vertex locally bipartite graph with minimum degree greater than 4/7 · <i>n</i> is 3-colourable (4/7 is tight) and with minimum degree greater than 6/11 · <i>n</i> is 4-colourable. …”
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Bipartite graphs with no K6 minor
Published 2023“…<br> But what if we restrict ourselves to bipartite graphs? The first statement remains true: for every ε > 0 there are arbitrarily large bipartite graphs with average degree at least 8 − ε and no K6 minor. …”
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Bayesian nonparametric models for bipartite graphs
Published 2012“…We develop a novel Bayesian nonparametric model for random bipartite graphs. The model is based on the theory of completely random measures and is able to handle a potentially infinite number of nodes. …”
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Bipartite graph reasoning GANs for person image generation
Published 2021“…We present a novel Bipartite Graph Reasoning GAN (BiGraphGAN) for the challenging person image generation task. …”
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Bipartite graph reasoning GANs for person pose and facial image synthesis
Published 2022“…We present a novel bipartite graph reasoning Generative Adversarial Network (BiGraphGAN) for two challenging tasks: person pose and facial image synthesis. …”
Conference item -
9
Risk in a large claims insurance market with bipartite graph structure
Published 2016“…We model the influence of sharing large exogeneous losses to the reinsurance market by a bipartite graph. Using Pareto-tailed claims and multivariate regular variation we obtain asymptotic results for the Value-atRisk and the Conditional Tail Expectation. …”
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A note on induced Turán numbers
Published 2021“…Their and subsequent work has focussed on $F$ being a complete bipartite graph. In this short note, we complement this focus by asymptotically determining the induced Turán number whenever $H$ is not bipartite and $F$ is not an independent set nor a complete bipartite graph.…”
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On the extremal number of subdivisions
Published 2019“…More precisely, we show that if H is a C4-free bipartite graph with maximum degree 2 on one side, then there are positive constants C and δ such that every graph with n vertices and Cn3/2−δ edges contains a copy of H. …”
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A complexity trichotomy for approximately counting list H-colourings
Published 2016“…If H is an irreflexive bipartite graph or a reflexive complete graph then counting list H-colourings is trivially in polynomial time. …”
Conference item -
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A complexity trichotomy for approximately counting list H-colourings
Published 2017“…If H is an irreflexive bipartite graph or a reflexive complete graph then counting list H-colourings is trivially in polynomial time. …”
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Sidorenko's conjecture, graph norms, and pseudorandomness
Published 2017“…This conjecture is closely related to Sidorenko's conjecture in the sense that it is true for every bipartite graph H that satisfies Sidorenko's conjecture. …”
Thesis -
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On a problem of El-Zahar and Erdős
Published 2023“…This, together with excluding <i>K<sub>t</sub></i>, is <i>not</i> enough to guarantee two anticomplete subgraphs both with large minimum degree; but it works if instead of excluding <i>K<sub>t</sub></i> we exclude the complete bipartite graph <i>K<sub>t,t</sub></i>. More exactly: for all <i>t</i>, <i>c</i> ≥ 1 there exists <i>d</i> ≥ 1 such that if <i>G</i> has minimum degree at least <i>d</i>, and does not contain the complete bipartite graph <i>K<sub>t,t</sub></i> as a subgraph, then there are two anticomplete subgraphs both with minimum degree at least <i>c</i>.…”
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Polynomial bounds for chromatic number. I: excluding a biclique and an induced tree
Published 2022“…It was proved by Rodl that graphs that do not contain H as an induced subgraph, and do not contain the complete bipartite graph $K_{t,t}$ as a subgraph, have bounded chromatic number. …”
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Topics in extremal graph theory and probabilistic combinatorics
Published 2018“…</p> <p>A <em>matching</em> in a bipartite graph G = (U, V, E) is a subset of the edges where no two edges meet, and each vertex from U is in an edge. …”
Thesis -
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Conditional risk measures in a bipartite market structure
Published 2017“…We model the influence of sharing large exogeneous losses to the financial or (re)insurance market by a bipartite graph. Using Pareto-tailed losses and multivariate regular variation, we obtain asymptotic results for conditional risk measures based on the Value-at-Risk and the Conditional Tail Expectation. …”
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The Partner Units Problem − A Constraint Programming Case Study
Published 2012“…Technically it consists of partitioning a bipartite graph under side conditions. In this work we describe how constraint programming technology can be leveraged to tackle the problem. …”
Conference item -
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Clique covers of H-free graphs
Published 2023“…It takes <i>n</i><sup>2</sup>/4 cliques to cover all the edges of a complete bipartite graph <i>K</i><sub><i>n/2,n/2</i></sub>, but how many cliques does it take to cover all the edges of a graph <i>G</i> if <i>G</i> has no <i>K</i><sub><i>t,t</i></sub> induced subgraph? …”
Journal article