96 citations · 292 across the 62 of their papers we have counts for
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Godsil-McKay switching and twisted Grassmann graphs
Akihiro Munemasa
We show that the twisted Grassmann graphs introduced by Van Dam and Koolen are obtained by Godsil-McKay switching applied to the Grassmann graphs. The partition for the switching i…
On -extremal singly even self-dual codes
Masaaki Harada, Akihiro Munemasa
A relationship between -extremal singly even self-dual codes and extremal doubly even self-dual codes with covering radius meeting the…
On the classification of self-dual [20,10,9] codes over GF(7)
Masaaki Harada, Akihiro Munemasa
It is shown that the extended quadratic residue code of length 20 over GF(7) is a unique self-dual [20,10,9] code C such that the lattice obtained from C by Construction A is isomo…
On the greatest and least elements in the set of semistandard tableaux of given shape and weight
Akihiro Munemasa, Minwon Na
We give three algorithms to construct a semistandard tableau of given shape and weight, where the weight is a composition which is not necessarily a partition. With respect to a na…
On the classification of self-dual -codes II
Masaaki Harada, Akihiro Munemasa
In this short note, we report the classification of self-dual -codes of length for and .