Irish bouzouki Irish bouzouki The Irish bouzouki () is an adaptation of the Greek bouzouki (Greek: μπουζούκι). Johnny Moynihan is credited with bringing the first "tetrachordo" (4 courses of strings) Greek bouzouki to Ireland and retuning it to G-D-A-D (in intervals he first used on the mandolin). In the mid-1960s, Moynihan established a presence for the instrument in Irish music with the folk trio Sweeney's Men. Alec Finn, first in the Cana Band and subsequently in De Dannan, introduced the first "trichordo" (3 courses of strings) Greek bouzouki into Irish music. In the early 1970s, Andy Irvine gave his Greek bouzouki to
Shannon capacity of a graph eight neighbors, the eight strings that it can be confused with. A subset of length-two strings forms a code with no possible confusion if and only if it corresponds to an independent set of this graph. The set of code words {"11", "23", "35", "54", "42"} forms one of these independent sets, of maximum size. If "G" is a graph representing the signals and confusable pairs of a channel, then the graph representing the length-two codewords and their confusable pairs is "G" ⊠ "G", where the symbol "⊠" represents the strong product of graphs. This is a graph that has