Research Group on Natural Computing

Languages appeared from the very beginning in membrane computing, by
their length sets or directly as sets of strings. We briefly recall here this relationship, with
some details about certain recent developments. In particular, we discuss the possibility
to associate a control word with a computation in a P system. An improvement of a result
concerning the control words of spiking neural P systems is given: regular languages can
be obtained as control words of such systems with only four neurons (and with usual
extended rules: no more spikes are produces than consumed). Several research topics are
pointed out.