… codes. Definition 3: Let be the additive quaternary code described by the set of all lines in …
Brouwer [1] determine the optimal code parameters for additive quaternary codes of length …

… quaternary additive codes with non-integer dimensions. Firstly, we propose combinatorial
constructions of quaternary additive constantweight codes… quaternary additive codes with short …

… of optimal quaternary additive 3.5-dimensional codes with … additive complementary dual
codes with larger distances than the best-known quaternary linear complementary dual codes …

… If some vertex M i occurs in some edge E j other than E i and E i+1 , then we find a shorter
bad circuit. If some edge E j contains a line M other than M j and M j−1 , then make the quotient …

… of a link to quantum stabilizer codes, see [2]–[4]. We will also use the geometric description
of additive quaternary codes. In fact, a quaternary [n, k, d]code is equivalent to a multiset of n …

… (ACD for short) in this paper. We give some matrix constructions for quaternary ACD codes
and we also construct an algorithm to determine if a given additive code is ACD with respect …

… Second, binary constant-amplitude codes cannot exist for … is odd (we will see that quaternary
codes indeed do). In [20] the … We will begin this section with a short review of symmetric …

… QUATERNARY CODES By a quaternary code C of length N we shall mean a linear block
code over 24, that is an additive subgroup of Z?. We define an inner product on 22 by (a, b) = …

… In the sequel we restrict to the case of quaternary additive codes and write [ n , k , d ] for [ n ,
k , d ] 4 . The quaternary case is of special interest, among … Short additive quaternary codes …

… that decomposes such codes into constituent codes, which are shorter codes over larger …
made taking the binary zeros and ones in xi and yi as quaternary zeros and ones. We call it …