Geodesic
On few-class Q-polynomial association schemes: feasible parameters and nonexistence results
Ars Mathematica Contemporanea, Tome 20 (2021) no. 1, pp. 103-127.

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We present the tables of feasible parameters of primitive 3-class Q-polynomial association schemes and 4- and 5-class Q-bipartite association schemes (on up to 2800, 10000, and 50000 vertices, respectively), accompanied by a number of nonexistence results for such schemes obtained by analysing triple intersection numbers of putative open cases.
DOI : 10.26493/1855-3974.2101.b76
Keywords: Association scheme, Q-polynomial, feasible parameters, distance-regular graph 
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Alexander L. Gavrilyuk; Janoš Vidali; Jason S. Williford. On few-class Q-polynomial association schemes: feasible parameters and nonexistence results. Ars Mathematica Contemporanea, Tome 20 (2021) no. 1, pp. 103-127. doi : 10.26493/1855-3974.2101.b76. http://geodesic.mathdoc.fr/articles/10.26493/1855-3974.2101.b76/

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