Tissue-like P systems with polarizations

1 Introduction Natural computing refers to a computational paradigm inspired by biological mechanisms in nature.Tissue-like P systems,a basic variant in membrane computing,can be viewed as distributed and parallel bio-inspired computing devices,where the objects in each region can communicate using corresponding channels,and infinitely many objects may exist in the environment.In[1],a novel variant of P systems with active membranes was proposed.The application of rules in this variant is associated with the polarization on a corresponding membrane.