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Mostrando ítems 41-50 de 51
Ponencia
P Systems with Minimal Left and Right Insertion and Deletion
(Fénix Editora, 2012)
In this article we investigate the operations of insertion and deletion performed at the ends of a string. We show that using these operations in a P systems framework (which corresponds to using specific variants of ...
Ponencia
Particular Results for Variants of P Systems with One Catalyst in One Membrane
(Fénix Editora, 2006)
Purely catalytic P systems can generate all recursively enumerable sets of natural numbers with only three catalysts in one membrane, whereas we know that one catalyst in one membrane is not enough. On the other hand, P ...
Ponencia
P Systems with Limited Capacity
(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 cell. In this paper, we focus on a variant in P systems in which membranes have limited capacity, i.e., ...
Ponencia
A Formal Framework for P Systems with Dynamic Structure
(Fénix Editora, 2012)
This article introduces a formalism/framework able to describe different variants of P systems having a dynamic structure. This framework can be useful for the definition of new variants of P systems with dynamic structure, ...
Ponencia
Playing with Derivation Modes and Halting Conditions
(Escuela Técnica Superior de Ingeniería Informática, Universidad de Sevilla, 2019)
In the area of P systems, besides the standard maximally parallel derivation mode, many other derivation modes have been investigated, too. In this paper, many variants of hierarchical P systems and tissue P systems using ...
Ponencia
Sequential P Systems with Unit Rules and Energy Assigned to Membranes
(Fénix Editora, 2004)
We introduce a new variant of membrane systems where the rules are directly assigned to membranes (and not to the regions as this is usually observed in the area of membrane systems) and, moreover, every membrane carries ...
Ponencia
Time-freeness and Clock-freeness and Related Concepts in P Systems
(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 into the system for the following step. In timed P systems, di erent integer durations are ...
Ponencia
P Systems with One Membrane and Symport/Antiport Rules of Five Symbols Are Computationally Complete
(Fénix Editora, 2005)
We consider P systems with only one membrane using symport/antiport rules and prove that any recursively enumerable set of k-dimensional vectors of natural numbers can be generated (accepted) by using at most k + 4 ...
Ponencia
P Systems with Randomized Right-hand Sides of Rules
(Fenix Editora, 2017)
P systems are a model of hierarchically compartmentalized multiset rewriting. We introduce a novel kind of P systems in which rules are dynamically constructed in each step by non-deterministic pairing of left-hand and ...
Ponencia
Introducing the Concept of Activation and Blocking of Rules in the General Framework for Regulated Rewriting in Sequential Grammars
(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 be de ned for a general model of sequential grammars and we show some similarities to other control ...