Patrice Ossona de Mendez, A model theoretical approach to sparsity

We discuss how the model theoretic notion of first-order transduction allows to define a notion of structural sparsity, and give some example of applications, like existence of low shrub-depth decompositions for tranductions of bounded expansion classes, characterization of transductions of classes with bounded pathwidth, decompositions of graphs with bounded rank-width into cographs.
IBS 이산수학그룹 Discrete Mathematics Group
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