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Continued Classification of 3D Lattice Walks in the Positive Octant

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arxiv 1511.05763 v1 pith:FX2PXPZZ submitted 2015-11-18 math.CO

classification math.CO
keywords latticemodelsasymptoticd-finitefunctiongeneratingoctantpositive
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We continue the investigations of lattice walks in the three dimensional lattice restricted to the positive octant. We separate models which clearly have a D-finite generating function from models for which there is no reason to expect that their generating function is D-finite, and we isolate a small set of models whose nature remains unclear and requires further investigation. For these, we give some experimental results about their asymptotic behaviour, based on the inspection of a large number of initial terms. At least for some of them, the guessed asymptotic form seems to tip the balance towards non-D-finiteness.

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  1. Combinatorial mappings of exclusion processes

    cond-mat.stat-mech 2019-08 conditional novelty 4.0 of 10

    A topical review of ASEP steady-state combinatorics that derives a new determinant form of the TASEP partition function and proposes an unproven bijection between decorated Motzkin paths and permutations.

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