8 citations · 13 across the 11 of their papers we have counts for
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Two-valenced association schemes and the Desargues theorem
Mitsugu Hirasaka, Kijung Kim, Ilia Ponomarenko
The main goal of the paper is to establish a sufficient condition for a two-valenced association scheme to be schurian and separable. To this end, an analog of the Desargues theore…
Characterization of finite metric space by their isometric sequences
Mitsugu Hirasaka, Masashi Shinohara
Let be a finite metric space with . For a positive integer we define to be the quotient set of all -subsets of by isometry, and we denote $|A_k(X…
Characterization of finite colored spaces with certain conditions
Mitsugu Hirasaka, Masashi Shinohara
A colored space is the pair of a set and a function whose domain is . Let be a finite colored space and . We shall write $Y\si…
Schurity and separability of quasiregular coherent configurations
Mitsugu Hirasaka, Kijung Kim, Ilia Ponomarenko
A permutation group is said to be quasiregular if every its transitive constituent is regular, and a quasiregular coherent configuration can be thought as a combinatorial analog of…