Type II codes, even unimodular lattices, and invariant rings

1999 ◽  
Vol 45 (4) ◽  
pp. 1194-1205 ◽  
Author(s):  
E. Bannai ◽  
S.T. Dougherty ◽  
M. Harada ◽  
M. Oura
Keyword(s):  
Type Ii ◽  
Invariant Rings ◽  
Type Ii Codes

Type II Codes over IF2r

2001 ◽  
pp. 102-111 ◽  
Author(s):  
Koichi Betsumiya ◽  
Masaaki Harada ◽  
Akihiro Munemasa
Keyword(s):  
Type Ii ◽  
Type Ii Codes

Type II codes over Z/sub 4/

1997 ◽  
Vol 43 (3) ◽  
pp. 969-976 ◽  
Author(s):  
A. Bonnecaze ◽  
P. Sole ◽  
C. Bachoc ◽  
B. Mourrain
Keyword(s):  
Type Ii ◽  
Type Ii Codes

scholarly journals EISENSTEIN POLYNOMIALS ASSOCIATED TO BINARY CODES

2009 ◽  
Vol 05 (04) ◽  
pp. 635-640 ◽  
Author(s):  
MANABU OURA
Keyword(s):  
Binary Codes ◽  
Weighted Sum ◽  
Type Ii ◽  
Weight Enumerators ◽  
Fixed Length ◽  
Type Ii Codes ◽  
Genus 2

The Eisenstein polynomial is the weighted sum of the weight enumerators of all classes of Type II codes of fixed length. In this note, we investigate the ring generated by Eisenstein polynomials in genus 2.

scholarly journals Niemeier lattices and Type II codes over Z4

1999 ◽  
Vol 205 (1-3) ◽  
pp. 1-21 ◽  
Author(s):  
Alexis Bonnecaze ◽  
Philippe Gaborit ◽  
Masaaki Harada ◽  
Masaaki Kitazume ◽  
Patrick Solé
Keyword(s):  
Type Ii ◽  
Type Ii Codes

scholarly journals Minimum Lee weights of Type II codes over F2r

2008 ◽  
Vol 308 (14) ◽  
pp. 3018-3022
Author(s):  
Koichi Betsumiya
Keyword(s):  
Type Ii ◽  
Type Ii Codes ◽  
Lee Weights

Type II codes over F/sub 2/+uF/sub 2/

1999 ◽  
Vol 45 (1) ◽  
pp. 32-45 ◽  
Author(s):  
S.T. Dougherty ◽  
P. Gaborit ◽  
M. Harada ◽  
P. Sole
Keyword(s):  
Type Ii ◽  
Type Ii Codes

On Type II codes over F/sub 4/

2001 ◽  
Vol 47 (6) ◽  
pp. 2242-2248 ◽  
Author(s):  
K. Betsumiya ◽  
T.A. Gulliver ◽  
M. Harada ◽  
A. Munemasa
Keyword(s):  
Type Ii ◽  
Type Ii Codes
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