It is well known that the supports of all codewords with a fixed weight in a code may form a t -design under certain conditions. In this paper, we will determine explicitly the parameters of many infinite families of 2-designs from the extended of the primitive BCH codes \\(\\mathcal ...
Note that if you used the article class, the same code would produce a normal Delta with an arrow: Share Improve this answer Follow answered May 23, 2011 at 19:54 Jukka Suomela 21.3k1515 gold badges7676 silver badges9595 bronze badges Add a comment 13 That is just $\Delta$ which...