Unitals and codes
نویسندگان
چکیده
A program is outlined for the enumeration of unital 2-(28,4,1) designs that uses tactical decompositions de1ned by vectors of certain weight in the dual binary code of a design. A class of designs with a spread that covers a codeword of weight 12 is studied in detail. A total of 909 nonisomorphic designs are constructed that include the classical hermitian and Ree unitals, as well as many other of the 145 previously known 2-(28,4,1) designs. c © 2002 Elsevier Science B.V. All rights reserved. PACS: 05B05; 51E30; 94B05
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عنوان ژورنال:
- Discrete Mathematics
دوره 267 شماره
صفحات -
تاریخ انتشار 2003