Nontouching List Segments When lseg a1·an(io,in), we have 3i1,.in-1: (i0一a1,i1)*(i1一a2,i2)*·*(in-1一an,in): Thus io,...,i1are distinct,but in is not constrained,and may equal any of the io,...,i1.In this case,we say that the list segment is touching. nontouching list segments {cycic{Cueiapingtortidoenbyy touchingNontouching List Segments