Rudolf Freund

Rudolf Freund, Ignacio Pérez-Hurtado, Agustin Riscos-Núñez, Sergey Verlan: A formalization of membrane systems with dynamically evolving structures. Int. J. Comput. Math. 90(4): 801-815 (2013)

Marco Antoniotti, Rudolf Freund, Alberto Leporati, Giancarlo Mauri: Self-Stabilization in Membrane Systems. The Computer Science Journal of Moldova 20(2): 133-146 (2012)

Rudolf Freund, Markus Holzer, Carlo Mereghetti, Friedrich Otto, Beatrice Palano: Special Issue: Non-Classical Models of Automata and Applications III (NCMA-2011). RAIRO - Theor. Inf. and Applic. 46(4): 459-460 (2012)

Artiom Alhazov, Rudolf Freund, Kenichi Morita: Sequential and maximally parallel multiset rewriting: reversibility and determinism. Natural Computing 11(1): 95-106 (2012)

Rudolf Freund: (Tissue) P Systems with Decaying Objects. Int. Conf. on Membrane Computing 2012: 1-25

Artiom Alhazov, Rudolf Freund: Asynchronous and Maximally Parallel Deterministic Controlled Non-cooperative P Systems Characterize NFIN and coNFIN. Int. Conf. on Membrane Computing 2012: 101-111

Artiom Alhazov, Rudolf Freund, Hilbert Heikenwälder, Marion Oswald, Yurii Rogozhin, Sergey Verlan: Sequential P Systems with Regular Control. Int. Conf. on Membrane Computing 2012: 112-127

Rudolf Freund, Yurii Rogozhin, Sergey Verlan: P Systems with Minimal Left and Right Insertion and Deletion. UCNC 2012: 82-93

Rudolf Freund, Markus Holzer, Bianca Truthe, Ulrich Ultes-Nitsche (Eds.): Fourth Workshop on Non-Classical Models for Automata and Applications - NCMA 2012, Fribourg, Switzerland, August 23-24, 2012. Proceedings. books@ocg.at 290, Österreichische Computer Gesellschaft 2012, isbn 978-3-85403-290-8

Henning Bordihn, Rudolf Freund, Mika Hirvensalo, Markus Holzer, Martin Kutrib, Friedrich Otto: Preface. Fundam. Inform. 112(2-3) (2011)

Rudolf Freund, Marian Gheorghe, Solomon Marcus, Victor Mitrana, Mario J. Pérez-Jiménez: Preface. Int. J. Found. Comput. Sci. 22(1) (2011)

Rudolf Freund, Sergey Verlan: (Tissue) P systems working in the k-restricted minimally or maximally parallel transition mode. Natural Computing 10(2): 821-833 (2011)

Rudolf Freund, Marian Kogler, Marion Oswald: A General Framework for Regulated Rewriting Based on the Applicability of Rules. Computation, Cooperation, and Life 2011: 35-53

Rudolf Freund, Markus Holzer, Carlo Mereghetti, Friedrich Otto, Beatrice Palano (Eds.): Third Workshop on Non-Classical Models for Automata and Applications - NCMA 2011, Milan, Italy, July 18 - July 19, 2011. Proceedings. books@ocg.at 282, Austrian Computer Society 2011, isbn 978-3-85403-282-3

Rudolf Freund, Marian Kogler: Computationally Complete Spiking Neural P Systems without Delay: Two Types of Neurons Are Enough. Int. Conf. on Membrane Computing 2010: 198-207

Artiom Alhazov, Rudolf Freund, Kenichi Morita: Reversibility and Determinism in Sequential Multiset Rewriting. UC 2010: 21-31

Rudolf Freund, Marian Kogler, Yurii Rogozhin, Sergey Verlan: Graph-Controlled Insertion-Deletion Systems. DCFS 2010: 88-98

Henning Bordihn, Rudolf Freund, Markus Holzer, Thomas Hinze, Martin Kutrib, Friedrich Otto (Eds.): Second Workshop on Non-Classical Models for Automata and Applications - NCMA 2010, Jena, Germany, August 23 - August 24, 2010. Proceedings. books@ocg.at 263, Austrian Computer Society 2010, isbn 978-3-85403-263-2

Artiom Alhazov, Marion Oswald, Rudolf Freund, Sergey Verlan: Partial Halting and Minimal Parallelism Based on Arbitrary Rule Partitions. Fundam. Inform. 91(1): 17-34 (2009)

Rudolf Freund: Transition and Halting Modes in (Tissue) P Systems. Workshop on Membrane Computing 2009: 18-29

Rudolf Freund, Marian Kogler: (Tissue) P Systems with Hybrid Transition Modes. Workshop on Membrane Computing 2009: 252-263

Rudolf Freund, Marian Kogler, Sergey Verlan: P Automata with Controlled Use of Minimal Communication Rules. NCMA 2009: 107-120

Rudolf Freund, Andreas Klein, Martin Kutrib: On the Number of Membranes in Unary P Systems. DCFS 2009: 101-109

Rudolf Freund, Marian Kogler: Drip and Mate Operations Acting in Test Tube Systems and Tissue-like P systems. MeCBIC 2009: 123-135

Henning Bordihn, Rudolf Freund, Markus Holzer, Martin Kutrib, Friedrich Otto (Eds.): Workshop on Non-Classical Models for Automata and Applications - NCMA 2009, Wroclaw, Poland, August 31 - September 1, 2009. Proceedings. books@ocg.at 256, Austrian Computer Society 2009, isbn 978-3-85403-256-4

Rudolf Freund, Marion Oswald: Regular omega-Languages Defined by Finite Extended Spiking Neural P Systems. Fundam. Inform. 83(1-2): 65-73 (2008)

Rudolf Freund, Marion Oswald: Cd Grammar Systems with Regular Start Conditions. Int. J. Found. Comput. Sci. 19(4): 767-779 (2008)

Rudolf Freund, Mihai Ionescu, Marion Oswald: Extended Spiking Neural P Systems with Decaying Spikes and/or Total Spiking. Int. J. Found. Comput. Sci. 19(5): 1223-1234 (2008)

Markus Beyreder, Rudolf Freund: Membrane Systems Using Noncooperative Rules with Unconditional Halting. Workshop on Membrane Computing 2008: 129-136

Cristian S. Calude, José Félix Costa, Rudolf Freund, Marion Oswald, Grzegorz Rozenberg (Eds.): Unconventional Computing, 7th International Conference, UC 2008, Vienna, Austria, August 25-28, 2008. Proceedings. Lecture Notes in Computer Science 5204, Springer 2008, isbn 978-3-540-85193-6

Rudolf Freund, Marion Oswald: Tissue P Systems and (Mem)Brane Systems with Mate and Drip Operations Working on Strings. Electr. Notes Theor. Comput. Sci. 171(2): 105-115 (2007)

Haiming Chen, Rudolf Freund, Mihai Ionescu, Gheorghe Paun, Mario J. Pérez-Jiménez: On String Languages Generated by Spiking Neural P Systems. Fundam. Inform. 75(1-4): 141-162 (2007)

Rudolf Freund, Marion Oswald: Modelling Grammar Systems by Tissue P Systems Working in the Sequential Mode. Fundam. Inform. 76(3): 305-323 (2007)

Rudolf Freund, Fritz Tafill: Cellular Automata and Parallel Array Systems. Fundam. Inform. 78(3): 311-327 (2007)

Rudolf Freund, Marion Oswald: Partial Halting in P Systems. Int. J. Found. Comput. Sci. 18(6): 1215-1225 (2007)

Henning Fernau, Rudolf Freund, Marion Oswald, Klaus Reinhardt: Refining the Nonterminal Complexity of Graph-Controlled, Programmed, and Matrix Grammars. Journal of Automata, Languages and Combinatorics 12(1-2): 117-138 (2007)

Matteo Cavaliere, Rudolf Freund, Marion Oswald, Dragos Sburlan: Multiset random context grammars, checkers, and transducers. Theor. Comput. Sci. 372(2-3): 136-151 (2007)

Rudolf Freund, Gheorghe Paun, Grzegorz Rozenberg: Contextual Array Grammars. Formal Models, Languages and Applications 2007: 112-136

Rudolf Freund, Marion Oswald: CD Grammar Systems with Regular Start Conditions. DCFS 2007: 69-80

Artiom Alhazov, Rudolf Freund, Marion Oswald, Sergey Verlan: Partial Halting in P Systems Using Membrane Rules with Permitting Contexts. MCU 2007: 110-121

Rudolf Freund, Sergey Verlan: A Formal Framework for Static (Tissue) P Systems. Workshop on Membrane Computing 2007: 271-284

Rudolf Freund, Gheorghe Paun, Mario J. Pérez-Jiménez: Polarizationless P Systems with Active Membranes Working in the Minimally Parallel Mode. UC 2007: 62-76

Alexandru Mateescu, Rudolf Freund: Routes and Products of Monoids. Fundam. Inform. 73(1-2): 205-211 (2006)

Artiom Alhazov, Rudolf Freund, Alberto Leporati, Marion Oswald, Claudio Zandron: (Tissue) P Systems with Unit Rules and Energy Assigned to Membranes. Fundam. Inform. 74(4): 391-408 (2006)

Artiom Alhazov, Rudolf Freund, Agustin Riscos-Núñez: Membrane division, restricted membrane creation and object complexity in P systems. Int. J. Comput. Math. 83(7): 529-547 (2006)

Rudolf Freund, Marion Oswald: P colonies and prescribed teams. Int. J. Comput. Math. 83(7): 569-592 (2006)

Artiom Alhazov, Rudolf Freund, Marion Oswald: Cell/symbol complexity of tissue P systems with symport/antiport rules. Int. J. Found. Comput. Sci. 17(1): 3-25 (2006)

Matteo Cavaliere, Rudolf Freund, Alexander Leitsch, Gheorghe Paun: Event-Related Outputs of Computations in P Systems. Journal of Automata, Languages and Combinatorics 11(3): 263-278 (2006)

Rudolf Freund: Special Variants of P Systems with One Catalyst in One Membrane. DCFS 2006: 250-258

Rudolf Freund, Marion Oswald: A Small Universal Antiport P System with Forbidden Context. DCFS 2006: 259-266

Artiom Alhazov, Rudolf Freund, Marion Oswald, Marija Slavkovik: Extended Spiking Neural P Systems. Workshop on Membrane Computing 2006: 123-134

Francesco Bernardini, Rudolf Freund: Tissue P Systems with Communication Modes. Workshop on Membrane Computing 2006: 170-182

Erzsébet Csuhaj-Varjú, Rudolf Freund, Dragos Sburlan: Modeling Dynamical Parallelism in Bio-systems. Workshop on Membrane Computing 2006: 330-351

Rudolf Freund, Gheorghe Paun, Grzegorz Rozenberg, Arto Salomaa (Eds.): Membrane Computing, 6th International Workshop, WMC 2005, Vienna, Austria, July 18-21, 2005, Revised Selected and Invited Papers. Lecture Notes in Computer Science 3850, Springer 2006, isbn 3-540-30948-9

Henning Fernau, Rudolf Freund, Markus Holzer: Representations of Recursively Enumerable Array Languages by Contextual Array Grammars. Fundam. Inform. 64(1-4): 159-170 (2005)

Rudolf Freund: P Systems working in the sequential mode on arrays and strings. Int. J. Found. Comput. Sci. 16(4): 663-682 (2005)

Rudolf Freund, Marion Oswald, Andrei Paun: Optimal results for the computational completeness of gemmating (tissue) P systems. Int. J. Found. Comput. Sci. 16(5): 929-942 (2005)

Rudolf Freund, Andrei Paun: P systems with active membranes and without polarizations. Soft Comput. 9(9): 657-663 (2005)

Rudolf Freund, Gheorghe Paun, Mario J. Pérez-Jiménez: Tissue P systems with channel states. Theor. Comput. Sci. 330(1): 101-116 (2005)

Rudolf Freund, Lila Kari, Marion Oswald, Petr Sosík: Computationally universal P systems without priorities: two catalysts are sufficient. Theor. Comput. Sci. 330(2): 251-266 (2005)

Henning Fernau, Rudolf Freund, Marion Oswald, Klaus Reinhardt: Refining the Nonterminal Complexity of Graph-controlled Grammars. DCFS 2005: 110-121

Artiom Alhazov, Rudolf Freund, Marion Oswald: Tissue P Systems with Antiport Rules and Small Numbers of Symbols and Cells. Developments in Language Theory 2005: 100-111

Artiom Alhazov, Rudolf Freund, Yurii Rogozhin: Computational Power of Symport/Antiport: History, Advances, and Open Problems. Workshop on Membrane Computing 2005: 1-30

Artiom Alhazov, Rudolf Freund, Marion Oswald: Symbol/Membrane Complexity of P Systems with Symport/Antiport Rules. Workshop on Membrane Computing 2005: 96-113

Artiom Alhazov, Rudolf Freund, Agustin Riscos-Núñez: One and Two Polarizations, Membrane Creation and Objects Complexity in P Systems. SYNASC 2005: 385-394

Rudolf Freund, Marion Oswald: P Colonies Working in the Maximally Parallel and in the Sequential Mode. SYNASC 2005: 419-426

Rudolf Freund, Marion Oswald: P Systems with Conditional Communication Rules Assigned to Membranes. Journal of Automata, Languages and Combinatorics 9(4): 387-397 (2004)

Rudolf Freund, Marion Oswald: P Systems with Local Graph Productions. New Generation Comput. 22(4): 365-375 (2004)

Rudolf Freund, Carlos Martín-Vide, Gheorghe Paun: From regulated rewriting to computing with membranes: collapsing hierarchies. Theor. Comput. Sci. 312(2-3): 143-188 (2004)

Franziska Freund, Rudolf Freund, Marion Oswald: Splicing Test Tube Systems and Their Relation to Splicing Membrane Systems. Aspects of Molecular Computing 2004: 139-151

Rudolf Freund, Marion Oswald, Andrei Paun: Gemmating P Systems are Computationally Complete with Four Membranes. DCFS 2004: 191-203

Rudolf Freund: P Systems Working in the Sequential Mode on Arrays and Strings. Developments in Language Theory 2004: 188-199

Artiom Alhazov, Rudolf Freund, Gheorghe Paun: Computational Completeness of P Systems with Active Membranes and Two Polarizations. MCU 2004: 82-92

Rudolf Freund, Alberto Leporati, Marion Oswald, Claudio Zandron: Sequential P Systems with Unit Rules and Energy Assigned to Membranes. MCU 2004: 200-210

Rudolf Freund: Asynchronous P Systems and P Systems Working in the Sequential Mode. Workshop on Membrane Computing 2004: 36-62

Artiom Alhazov, Rudolf Freund: On the Efficiency of P Systems with Active Membranes and Two Polarizations. Workshop on Membrane Computing 2004: 146-160

Rudolf Freund, Marion Oswald, Andrei Paun: P Systems Generating Trees. Workshop on Membrane Computing 2004: 309-319

Aneta Binder, Rudolf Freund, Georg Lojka, Marion Oswald: Implementation of Catalytic P Systems. CIAA 2004: 45-56

Jozef Kelemen, Rudolf Freund, Gheorghe Paun: A Note on Emergence in Multi-Agent String Processing Systems. Computers and Artificial Intelligence 22(6): 623-637 (2003)

Henning Fernau, Markus Holzer, Rudolf Freund: Hybrid modes in cooperating distributed grammar systems: combining the t-mode with the modes le k and =k. Theor. Comput. Sci. 1-3(299): 633-662 (2003)

Rudolf Freund, Franziska Freund: Generalized Homogeneous P-Systems. Grammars and Automata for String Processing 2003: 381-390

Rudolf Freund, Marion Oswald, Petr Sosík: Reducing the Number of Catalysts Needed in Computationally Universal P Systems without Priorities. DCFS 2003: 102-113

Rudolf Freund, Carlos Martín-Vide, Adam Obtulowicz, Gheorghe Paun: On Three Classes of Automata-Like P Systems. Developments in Language Theory 2003: 292-303

Franziska Freund, Rudolf Freund, Marion Oswald, Maurice Margenstern, Yurii Rogozhin, Sergey Verlan: P Systems with Cutting/Recombination Rules Assigned to Membranes. Workshop on Membrane Computing 2003: 191-202

Rudolf Freund, Marion Oswald, Ludwig Staiger: omega-P Automata with Communication Rules. Workshop on Membrane Computing 2003: 203-217

Rudolf Freund, Marion Oswald: A Short Note on Analysing P Systems with Antiport Rules. Bulletin of the EATCS 78: 231-236 (2002)

Rudolf Freund, Marion Oswald: GP Systems with Forbidding Context. Fundam. Inform. 49(1-3): 81-102 (2002)

Rudolf Freund, Carlos Martín-Vide, Victor Mitrana: On Some Operations on Strings Suggested by Gene Assembly in Ciliates. New Generation Comput. 20(3): 279-294 (2002)

Rudolf Freund: Energy-Controlled P Systems. WMC-CdeA 2002: 247-260

Rudolf Freund, Marion Oswald: P Systems with Activated/Prohibited Membrane Channels. WMC-CdeA 2002: 261-269

Rudolf Freund, Andrei Paun: Membrane Systems with Symport/Antiport Rules: Universality Results. WMC-CdeA 2002: 270-287

Petr Sosík, Rudolf Freund: P Systems without Priorities Are Computationally Universal. WMC-CdeA 2002: 400-409

Rudolf Freund: Special Variants of P Systems Inducing an Infinite Hierarchy with Respect to the Number of Membranes. Bulletin of the EATCS 75: 209-219 (2001)

Henning Fernau, Markus Holzer, Rudolf Freund: Hybrid modes in cooperating distributed grammar systems: internal versus external hybridization. Theor. Comput. Sci. 259(1-2): 405-426 (2001)

Rudolf Freund, Ludwig Staiger: Acceptance of omega-languages by communicating deterministic turing maching. Where Mathematics, Computer Science, Linguistics and Biology Meet 2001: 115-126

Petr Sosík, Rudolf Freund: String Rewriting Sequential P-Systems and Regulated Rewriting. Developments in Language Theory 2001: 379-388

Rudolf Freund, Gheorghe Paun: On the Number of Non-terminal Symbols in Graph-Controlled, Programmed and Matrix Grammars. MCU 2001: 214-225

Rudolf Freund: Array Grammar Systems. Journal of Automata, Languages and Combinatorics 5(1): 13-30 (2000)

Rudolf Freund, Franziska Freund: Molecular Computing with Generalized Homogeneous P-Systems. DNA Computing 2000: 130-144

Rudolf Freund, Markus Neubauer, Martin Summerer, Stefan Gruber, Jürgen Schaffer, Roland Swoboda: A Hybrid System for the Recognition of Hand-Written Characters. SSPR/SPR 2000: 67-76

Rudolf Freund: Generalized P-Systems with Splicing and Cutting/Recombination. Grammars 2(3): 189-199 (1999)

Rudolf Freund, Lila Kari, Gheorghe Paun: DNA Computing Based on Splicing: The Existence of Universal Computers. Theory Comput. Syst. 32(1): 69-112 (1999)

Rudolf Freund, Franziska Freund: Test tube systems: when two tubes are enough. Developments in Language Theory 1999: 338-350

Rudolf Freund: Generalized P-Systems. FCT 1999: 281-292

Henning Fernau, Rudolf Freund, Markus Holzer: Regulated Array Grammars of Finite Index. Part I: Theoretical Investigations. Grammatical Models of Multi-Agent Systems 1999: 157-181

Henning Fernau, Rudolf Freund, Markus Holzer: Regulated Array Grammars of Finite Index. Part II: Syntactic Pattern Recognition. Grammatical Models of Multi-Agent Systems 1999: 284-296

Rudolf Freund, Christian Stary, Herbert Pötzl, Tatjana Svizensky: Formal Specification and Simulation of Software through Graph Grammars: A General but Minimal Approach. COMPSAC 1998: 148-153

Henning Fernau, Rudolf Freund, Markus Holzer: The Generative Power of d-Dimensional #-Context-Free Array Grammars. MCU (2) 1998: 43-56

Rudolf Freund: Array Grammar Systems. MFCS Workshop on Grammar Systems 1998: 91-116

Henning Fernau, Rudolf Freund, Markus Holzer: Character Recognition with k-Head Finite Array Automata. SSPR/SPR 1998: 282-291

Henning Fernau, Rudolf Freund: Accepting Array Grammars with Control Mechanisms. New Trends in Formal Languages 1997: 95-118

Henning Fernau, Markus Holzer, Rudolf Freund: Bounding resources in Cooperating Distributed Grammar Systems. Developments in Language Theory 1997: 261-272

Rudolf Freund, Franziska Freund: Test Tube Systems or How to Bake a DNA Cake. Acta Cybern. 12(4): 445-460 (1996)

Rudolf Freund, F. Wachtler: Universal Systems with Operations Related to Splicing. Computers and Artificial Intelligence 15(4) (1996)

Rudolf Freund: Cutting/Recombination Systems as Generating Devices. German Conference on Bioinformatics 1996: 202-204

Henning Fernau, Rudolf Freund: Bounded Parallelism in Array Grammars Used for Character Recognition. SSPR 1996: 40-49

Jürgen Dassow, Rudolf Freund, Gheorghe Paun: Cooperating Array Grammar Systems. IJPRAI 9(6): 1029-1053 (1995)

Rudolf Freund, Gheorghe Paun: A Variant of Team Cooperation in Grammar Systems. J. UCS 1(2): 105-130 (1995)

Rudolf Freund: Array Grammars with Prescribed Teams of Array Productions. Developments in Language Theory 1995: 220-229

Rudolf Freund, Gheorghe Paun: One-dimensional matrix array grammars. Elektronische Informationsverarbeitung und Kybernetik 29(6): 357-374 (1993)

Rudolf Freund: Aspects of N-Dimensional Lindenmayer Systems. Developments in Language Theory 1993: 250-261

Christian Stary, Rudolf Freund: How Semantical Design Languages Help to Preserve Specification/Design-Consistency. SEKE 1993: 462-471

Rudolf Freund, Brigitte Haberstroh, Christian Stary: Applying Graph Grammars for Task-Oriented User Interface Development. ICCI 1992: 389-392

Rudolf Freund, Martina Kirchmeyer, Friedrich Tafill: Modelling Feature Maps by Attributed Parallel Array Grammars. ÖGAI 1991: 83-92

Rudolf Freund, Brigitte Haberstroh: Attributed Elementarz Programmed Graph Grammars. WG 1991: 75-84

Rudolf Freund: Init and Anf Operating on omega-Languages. Inf. Process. Lett. 16(5): 265-269 (1983)

Rudolf Freund: Real Functions and Numbers Defined by Turing Machines. Theor. Comput. Sci. 23: 287-304 (1983)