Harada, Masaaki On the existence of \(s\)-extremal singly even self-dual codes. (English) Zbl 1512.94129 Discrete Math. Algorithms Appl. 13, No. 2, Article ID 2150014, 14 p. (2021). MSC: 94B05 PDFBibTeX XMLCite \textit{M. Harada}, Discrete Math. Algorithms Appl. 13, No. 2, Article ID 2150014, 14 p. (2021; Zbl 1512.94129) Full Text: DOI arXiv
Harada, Masaaki; Munemasa, Akihiro On the classification of self-dual \(\mathbb{Z}_{k}\)-codes. II. (English) Zbl 1487.94168 Interdiscip. Inf. Sci. 22, No. 1, 81-85 (2016). MSC: 94B05 PDFBibTeX XMLCite \textit{M. Harada} and \textit{A. Munemasa}, Interdiscip. Inf. Sci. 22, No. 1, 81--85 (2016; Zbl 1487.94168) Full Text: DOI
Harada, Masaaki; Munemasa, Akihiro On the classification of self-dual \([20,10,9]\) codes over \(\mathrm{GF}(7)\). (English) Zbl 1364.94608 Finite Fields Appl. 42, 57-66 (2016). MSC: 94B05 11T71 11E12 PDFBibTeX XMLCite \textit{M. Harada} and \textit{A. Munemasa}, Finite Fields Appl. 42, 57--66 (2016; Zbl 1364.94608) Full Text: DOI arXiv
Harada, Masaaki Extremal unimodular lattices in dimension 36. (English) Zbl 1309.11056 Int. J. Comb. 2014, Article ID 792471, 7 p. (2014). MSC: 11H06 PDFBibTeX XMLCite \textit{M. Harada}, Int. J. Comb. 2014, Article ID 792471, 7 p. (2014; Zbl 1309.11056) Full Text: DOI arXiv
Harada, Masaaki; Miezaki, Tsuyoshi On the existence of extremal type II \(\mathbb Z_{2k}\)-codes. (English) Zbl 1330.94059 Math. Comput. 83, No. 287, 1427-1446 (2014). Reviewer: Steven T. Dougherty (Scranton) MSC: 94B05 11H71 11F11 PDFBibTeX XMLCite \textit{M. Harada} and \textit{T. Miezaki}, Math. Comput. 83, No. 287, 1427--1446 (2014; Zbl 1330.94059) Full Text: DOI arXiv
Harada, Masaaki Optimal self-dual \(\mathbb Z_4\)-codes and a unimodular lattice in dimension 41. (English) Zbl 1257.11069 Finite Fields Appl. 18, No. 3, 529-536 (2012). MSC: 11H71 94B75 94B05 PDFBibTeX XMLCite \textit{M. Harada}, Finite Fields Appl. 18, No. 3, 529--536 (2012; Zbl 1257.11069) Full Text: DOI arXiv
Harada, Masaaki; Miezaki, Tsuyoshi An optimal odd unimodular lattice in dimension 72. (English) Zbl 1257.11067 Arch. Math. 97, No. 6, 529-533 (2011). MSC: 11H06 11H71 94B05 PDFBibTeX XMLCite \textit{M. Harada} and \textit{T. Miezaki}, Arch. Math. 97, No. 6, 529--533 (2011; Zbl 1257.11067) Full Text: DOI arXiv
Harada, Masaaki On the residue codes of extremal Type II \(\mathbb Z_4\)-codes of lengths 32 and 40. (English) Zbl 1235.94080 Discrete Math. 311, No. 20, 2148-2157 (2011). MSC: 94B60 PDFBibTeX XMLCite \textit{M. Harada}, Discrete Math. 311, No. 20, 2148--2157 (2011; Zbl 1235.94080) Full Text: DOI arXiv
Harada, Masaaki Construction of some unimodular lattices with long shadows. (English) Zbl 1237.11029 Int. J. Number Theory 7, No. 5, 1345-1358 (2011). Reviewer: Ranjeet Sehmi (Chandigarh) MSC: 11H06 11H71 94B05 PDFBibTeX XMLCite \textit{M. Harada}, Int. J. Number Theory 7, No. 5, 1345--1358 (2011; Zbl 1237.11029) Full Text: DOI arXiv
Harada, Masaaki Extremal type II \(\mathbb Z_4\)-codes of lengths 56 and 64. (English) Zbl 1206.94107 J. Comb. Theory, Ser. A 117, No. 8, 1285-1288 (2010). MSC: 94B05 94B15 PDFBibTeX XMLCite \textit{M. Harada}, J. Comb. Theory, Ser. A 117, No. 8, 1285--1288 (2010; Zbl 1206.94107) Full Text: DOI
Harada, Masaaki; Munemasa, Akihiro; Venkov, Boris Classification of ternary extremal self-dual codes of length 28. (English) Zbl 1203.94135 Math. Comput. 78, No. 267, 1787-1796 (2009). Reviewer: Peter Beelen (Lyngby) MSC: 94B05 11H71 PDFBibTeX XMLCite \textit{M. Harada} et al., Math. Comput. 78, No. 267, 1787--1796 (2009; Zbl 1203.94135) Full Text: DOI
Harada, Masaaki; Munemasa, Akihiro A complete classification of ternary self-dual codes of length 24. (English) Zbl 1168.94006 J. Comb. Theory, Ser. A 116, No. 5, 1063-1072 (2009). Reviewer: Juan Tena Ayuso (Valladolid) MSC: 94B05 94B75 11H31 PDFBibTeX XMLCite \textit{M. Harada} and \textit{A. Munemasa}, J. Comb. Theory, Ser. A 116, No. 5, 1063--1072 (2009; Zbl 1168.94006) Full Text: DOI arXiv
Harada, Masaaki On the self-dual \(\mathbb F_{5}\)-codes constructed from Hadamard matrices of order 24. (English) Zbl 1068.94026 J. Comb. Des. 13, No. 2, 152-156 (2005). MSC: 94B05 05B20 PDFBibTeX XMLCite \textit{M. Harada}, J. Comb. Des. 13, No. 2, 152--156 (2005; Zbl 1068.94026) Full Text: DOI