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      A Formal Framework for Clock-free Networks of Cells 

      Ivanov, Sergiu (Fénix Editora, 2012)
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      Beyond Generalized Multiplicities: Register Machines over Groups 

      Alhazov, Artiom; Freund, Rudolf; Ivanov, Sergiu (Escuela Técnica Superior de Ingeniería Informática, Universidad de Sevilla, 2019)
      Register machines are a classic model of computing, often seen as a canonical example of a device manipulating natural ...
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      Catalytic P Systems with Weak Priority of Catalytic Over Non-catalytic Rules 

      Alhazov, Artiom; Freund, Rudolf; Ivanov, Sergiu (Escuela Técnica Superior de Ingeniería Informática, Universidad de Sevilla, 2020)
      Catalytic P systems are among the rst variants of membrane systems ever considered in this area. This variant of systems ...
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      Complexity of Simulating R Systems by P Systems 

      Alhazov, Artiom; Aman, Bogdan; Freund, Rudolf; Ivanov, Sergiu (Fénix, 2016)
      We show multiple ways to simulate R systems by non-cooperative P systems with atomic control by promoters and/or inhibitors, ...
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      Extended SNP Systems with States 

      Alhazov, Artiom; Freund, Rudolf; Ivanov, Sergiu (Fénix, 2016)
      We consider (extended) spiking neural P systems with states, where the applicability of rules in a neuron not only depends ...
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      Extended Spiking Neural P Systems with White Hole Rules 

      Alhazov, Artiom; Freund, Rudolf; Ivanov, Sergiu; Oswald, Marion; Verlan, Sergey (Fénix Editora, 2015)
      We consider extended spiking neural P systems with the additional possibility of so-called \white hole rules", which send ...
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      Forward and Backward Chaining with P Systems 

      Ivanov, Sergiu; Alhazov, Artiom; Rogozhin, Vladimir; Gutiérrez Naranjo, Miguel Ángel (Fénix Editora, 2011)
      On the one hand, one of the concepts which lies at the basis of membrane computing is the multiset rewriting rule. On the ...
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      How to Go Beyond Turing with P Automata: Time Travels, Regular Observer !-Languages, and Partial Adult Halting 

      Freund, Rudolf; Ivanov, Sergiu; Staiger, Ludwig (Fénix Editora, 2015)
      In this paper we investigate several variants of P automata having in nite runs on nite inputs. By imposing speci c ...
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      Input-Driven Tissue P Automata 

      Alhazov, Artiom; Freund, Rudolf; Ivanov, Sergiu; Oswald, Marion; Verlan, Sergey (Universidad de Sevilla, Escuela Técnica Superior de Ingeniería Informática, 2018)
      We introduce several variants of input-driven tissue P automata where the rules to be applied only depend on the input ...
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      Introducing the Concept of Activation and Blocking of Rules in the General Framework for Regulated Rewriting in Sequential Grammars 

      Alhazov, Artiom; Freund, Rudolf; Ivanov, Sergiu (Universidad de Sevilla, Escuela Técnica Superior de Ingeniería Informática, 2018)
      We introduce new possibilities to control the application of rules based on the preceding application of rules which can ...
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      Length P Systems with a Lone Traveler 

      Alhazov, Artiom; Freund, Rudolf; Ivanov, Sergiu (Fénix Editora, 2014)
      In this paper we consider P systems with linear membrane structures (only one membrane is elementary) with at most one ...
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      One-Membrane P Systems with Activation and Blocking of Rules 

      Alhazov, Artiom; Freund, Rudolf; Ivanov, Sergiu (Universidad de Sevilla, Escuela Técnica Superior de Ingeniería Informática, 2018)
      We introduce new possibilities to control the application of rules based on the preceding applications, which can be de ...
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      P Systems with Limited Capacity 

      Alhazov, Artiom; Freund, Rudolf; Ivanov, Sergiu (Escuela Técnica Superior de Ingeniería Informática, Universidad de Sevilla, 2020)
      P systems are a model of compartmentalized multiset rewriting inspired by the structure and functioning of the living ...
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      P Systems with Randomized Right-hand Sides of Rules 

      Alhazov, Artiom; Freund, Rudolf; Ivanov, Sergiu (Fenix Editora, 2017)
      P systems are a model of hierarchically compartmentalized multiset rewriting. We introduce a novel kind of P systems in ...
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      P Systems: from Anti-Matter to Anti-Rules 

      Alhazov, Artiom; Freund, Rudolf; Ivanov, Sergiu; Pérez Jiménez, Mario de Jesús (Escuela Técnica Superior de Ingeniería Informática, Universidad de Sevilla, 2019)
      The concept of a matter object being annihilated when meeting its corresponding anti-matter object is taken over for rule ...
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      Purely Catalytic P Systems over Integers and Their Generative Power 

      Alhazov, Artiom; Belingheri, Omar; Freund, Rudolf; Ivanov, Sergiu; Porreca, Antonio E.; Zandron, Claudio (Fénix, 2016)
      We further investigate the computing power of the recently introduced P systems with Z-multisets (also known as hybrid ...
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      Semilinear Sets, Register Machines, and Integer Vector Addition (P) Systems 

      Alhazov, Artiom; Belingheri, Omar; Freund, Rudolf; Ivanov, Sergiu; Porreca, Antonio E.; Zandron, Claudio (Fénix, 2016)
      In this paper we consider P systems working with multisets with integer multiplicities. We focus on a model in which rule ...
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      The Membrane Systems Language Class 

      Alhazov, Artiom; Ciubotaru, Constantin; Rogozhin, Yurii; Ivanov, Sergiu (Fénix Editora, 2010)
      The aim of this paper is to introduce the class of languages generated by the transitional model of membrane systems ...
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      Time-freeness and Clock-freeness and Related Concepts in P Systems 

      Alhazov, Artiom; Freund, Rudolf; Ivanov, Sergiu; Pan, Linqiang; Song, Bosheng (Fenix Editora, 2017)
      In the majority of models of P systems, rules are applied at the ticks of a global clock and their products are introduced ...
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      (Tissue) P Systems with Anti-Membranes 

      Alhazov, Artiom; Freund, Rudolf; Ivanov, Sergiu (Escuela Técnica Superior de Ingeniería Informática, Universidad de Sevilla, 2019)
      The concept of a matter object being annihilated when meeting its corresponding anti-matter object is taken over for ...