AbstractIn this note, we investigate Type I codes over Z4 constructed from Hadamard matrices. As an application, we construct a Type I Z4-code with minimum Euclidean weight 16 of length 40. This code is the first example of such a Type I Z4-code. This code also gives an example of a 40-dimensional extremal odd unimodular lattice with minimum norm 4
Using the building-up method and a modification of the doubling method we construct new extremal Typ...
Using the building-up method and a modification of the doubling method we construct new extremal Typ...
AbstractRecently, Type IV self-dual codes over rings of order 4 have been introduced as self-dual co...
AbstractIn this note, we investigate Type I codes over Z4 constructed from Hadamard matrices. As an ...
AbstractFor lengths up to 47 except 37, we determine the largest minimum Euclidean weight among all ...
AbstractRecently, Type IV self-dual codes over rings of order 4 have been introduced as self-dual co...
AbstractThe optimal minimal Euclidean norm of self-dual codes over Z4 is known through length 24; th...
AbstractFor lengths up to 47 except 37, we determine the largest minimum Euclidean weight among all ...
AbstractThe structure of abelian Z4-codes (and more generally Zpm-codes) is studied. The approach is...
AbstractThe classification of all self-dual codes over Z4 of length up to 15 and Type II codes of le...
AbstractFornodd, theZ4cyclic code generated by 2 is self-dual. We call this a trivial cyclic self-du...
AbstractWe show that there are 133 inequivalent Type II codes over Z4of length 16. We give the numbe...
AbstractIt has been observed by Assmus and Key as a result of the complete classification of Hadamar...
Using the building-up method and a modification of the doubling method we construct new extremal Typ...
Using the building-up method and a modification of the doubling method we construct new extremal Typ...
Using the building-up method and a modification of the doubling method we construct new extremal Typ...
Using the building-up method and a modification of the doubling method we construct new extremal Typ...
AbstractRecently, Type IV self-dual codes over rings of order 4 have been introduced as self-dual co...
AbstractIn this note, we investigate Type I codes over Z4 constructed from Hadamard matrices. As an ...
AbstractFor lengths up to 47 except 37, we determine the largest minimum Euclidean weight among all ...
AbstractRecently, Type IV self-dual codes over rings of order 4 have been introduced as self-dual co...
AbstractThe optimal minimal Euclidean norm of self-dual codes over Z4 is known through length 24; th...
AbstractFor lengths up to 47 except 37, we determine the largest minimum Euclidean weight among all ...
AbstractThe structure of abelian Z4-codes (and more generally Zpm-codes) is studied. The approach is...
AbstractThe classification of all self-dual codes over Z4 of length up to 15 and Type II codes of le...
AbstractFornodd, theZ4cyclic code generated by 2 is self-dual. We call this a trivial cyclic self-du...
AbstractWe show that there are 133 inequivalent Type II codes over Z4of length 16. We give the numbe...
AbstractIt has been observed by Assmus and Key as a result of the complete classification of Hadamar...
Using the building-up method and a modification of the doubling method we construct new extremal Typ...
Using the building-up method and a modification of the doubling method we construct new extremal Typ...
Using the building-up method and a modification of the doubling method we construct new extremal Typ...
Using the building-up method and a modification of the doubling method we construct new extremal Typ...
AbstractRecently, Type IV self-dual codes over rings of order 4 have been introduced as self-dual co...
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