P systems

Notes about P systems:

• membrane structure:

  • For cell-like P systems, the membrane structure is hierarchical which means a membrane may contain several other membranes. It is usually represented via a string of paired square brackets with labels. A valid string can be generated by the context-free grammar

• • where

Reference:

1. A. Alhazov: Communication in Membrane Systems with Symbol Objects (Dissertation), Universitat Rovira I Virgili, 2006.