An operation of concatenation is introduced for graphs. Then strings are viewed as expressions denoting graphs, and string languages are interpreted as graph languages. For a clas...
The routing architecture of an FPGA consists of the length of the wires, the type of switch used to connect wires (buffered, unbuffered, fast or slow) and the topology of the inte...
ct The backbone of the XML data model, namely ordered, unranked trees, is inherently recursive and it is natural to equip the associated languages with constructs that can query su...