Author_Institution :
Dept. of Math. & Stat., Nebraska Univ., Lincoln, NE, USA
Abstract :
If C is a binary linear code, one may choose a subset S of C, and form a new code CST which is the row space of the matrix having the elements of S as its columns. One way of picking S is to choose a subgroup H of Aut(C) and let S be some H-stable subset of C. Using (primarily) this method for picking S, we obtain codes with record-breaking parameters [92,8,44], [105,8,50], [108,8,52], [79,9,36], [123,9,58], [130,9,62], [175,9,84], [242,9,118], and [245,9,120]