ナガタ　キヨシ   永田　清   経営学部 経営学科   教授

■ 標題   Mass formula and structure of self-dual codes over $Z_{2^s}$

■ 概要   We look at the structure of and give a mass formula for self-dual codes over the ring $Z/2^sZ$ of integers modulo $2^s$ . Together with earlier work on the case of odd primes, this completes the mass formula for self-dual codes for $Z/p^sZ$, for all prime numbers p and positive integers s.   Nagata, K., Nemenzo, F., Wada, H.   共著   Journal of Designs, Codes and Cryptography   Springer US   67(3),pp.293-316   2013/06

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