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Discrete Mathematics & Theoretical Computer Science |
Motivated by the theory of operads, we introduce new combinatorial objects, called shrubs, that generalize forests of rooted trees. We show that the species of shrubs is isomorphic to the species of series-parallel posets.
Source : ScholeXplorer
IsRelatedTo ARXIV 1307.0092 Source : ScholeXplorer IsRelatedTo DOI 10.1016/j.jalgebra.2016.07.001 Source : ScholeXplorer IsRelatedTo DOI 10.48550/arxiv.1307.0092
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