作者: Pierluigi Frisco
DOI: 10.1016/S0304-3975(02)00658-8
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摘要: A direct universal extended H system receives as input the coding of an with a particular control mechanism and simulates it. We present construction for five kinds systems under consideration. It is first time that described: results obtained until now were based on simulation type-0 grammars or Turing machine.