This is the programme of the biannual conference of iqsa that was held in Berlin in the summer of 1995. MONDAY ORDER STRUCTURES 9.00 - 9.40 D. Foulis: The Quantum-Logic / Universal-Group Connection 9.45 - 10.25 M. Navara, (R. Mayet): Orthomodular Lattices with Rich State Spaces 10.30 - 11.00 P. Ptak, (M. Navara): Enlarging Quantum Logics - how the centre and state space changes? 11.05 - 11.30 Break 11.30 - 12.00 S. Gudder: E-Test Spaces 12.05 - 12.35 Dalla Chiara, (G, Cattaneo, R. Giuntini): Dynamic Ideas in Quantum Logic 12.40 - 13.10 M.K. Bennett: Lattice ordered Effect Algebras 13.15 - 14.45 Break ALGEBRAIC STRUCTURES 14.45 - 15.15 G.T. Ruettimann: States on JBW*-Triples 15.20 - 15.40 D.A. Dubin, (M.A. Hennings, A.I. Salomon): Representations of the Ultra-Commutation Relations 15.45 - 16.15 A. Rieckers: Fuzzy Sets in Macroscopic Radiation Models 16.20 - 16.40 G. Chevalier: Orthosymmetries and Jordan *-Triples 16.45 - 17.15 Break 17.15 - 17.35 N.P. Landsman: Poisson Spaces with a Transition Probability 17.40 - 18.00 N.A.M. Monk, (B.J. Hiley): A Unified Algebraic Approach to Quantum Theory 18.05 - 18.25 J. Hamhalter: Pure States and Independence of Operator Algebras 18.30 - 18.50 A.M. Bikchentaev: Majorization for Products of Measurable Operators TUESDAY RELATIVITY 9.00 - 9.40 Isham: The challenge of quantum gravity to quantum theory 9.45 - 10.25 Fredenhagen: 10.30 - 11.00 M. Keyl: How to describe the space-time structures with nets of C*-algebras 11.05 - 11.30 Break 11.30 - 12.00 S.T. Ali: Systems of Covariance in Relativistic Quantum Mechanics 12.05 - 12.35 J. Slavianowski: U(2,2)-Symmetry as a Common Basis for Quantum Theory and Geometrodynamics 12.40 - 13.10 A.R. Marlow: General Relativistic Quantum Field Theory 13.15 - 14.45 Break Session A Relativity / Measure Structures / Interpretation 14.45 - 15.05 P. Leifer: Quantum requires gravity... 15.10 - 15.30 P.F. Gonzalez-Diaz: Quantum Gravity and the Problem of Measurement 15.35 - 16.05 A. Dvurecenskij: Soler's Theorem and Characterizations of Inner Product Spaces 16.10 - 16.30 M. Matvejchuk: Probability Measures in Hilbert Spaces with Conjugation 16.35 - 16.55 D. Mushtari: Additive Sign-Measures on Projections with Values in Rational or Residue Fields 17.00 - 17.30 Break 17.30 - 17.50 L.E. Szabo: 17.55 - 18.15 J. Summhammer: Invariants in Quantum Data 18.20 - 18.40 D. Schoch: The Ingnorance Interpretation of Mixed States and the Structure of Hidden Variable Spaces Session B Order Structures 14.45 - 15.15 S. Pulmannova: Quantum Logics and Quantum Measurements 15.20 - 15.50 G. Bruns, (J. Harding): Amalgamation of Ortholattices, Orthomodular Lattices and Modular Ortholattices 15.55 - 16.25 H.A. Keller: On the Geometry of Orthomodular Spaces over Fields of Power Series 16.30 - 16.50 P. Brass: On Extremal Orthoposets without forbidden substructures 16.55 - 17.30 Break 17.30 - 17.50 J.C. Carrega: Coverings of [MOn] and minimal orthomodular lattices 17.55 - 18.15 J. Tkadlec: Quantum logics with small state spaces 18.20 - 18.40 F.Sultanbekov, (P.Ovchinnikov): Finite Concrete Logics WEDNESDAY RELATION OF CLASSICAL TO QUANTUM MEASUREMENTS AND FUZZYNESS 9.00 - 9.30 E. Beltrametti: The Bell Phenomenon in Classical Framework 9.35 - 9.55 S. Bugajski: Hidden Variables for Operational Theories 10.00 - 10.30 W. Stulpe: On the Representation of Quantum Mechanics on a Classical Sample Space 10.35 - 11.05 B. D'Hooghe: A Macroscopic Three-Dimensional Quantum Entity 11.10 - 11.30 Break 11.30 - 12.00 R. Werner: Against the Projection Postulate 12.05 - 12.35 P. Busch: Can ``Unsharp Objectification'' solve the Quantum Measurement Problem 12.40 - 13.10 D. Aerts: The Hidden measurement formalism: What can be explained and where paradoxes remain THURSDAY DYNAMICS, IRREVERSIBILITY, AND STOCHASTICS 9.00 - 9.40 L. Lanz, (V. Vacchini, O. Melsheimer): Scattering Maps and Subdynamics in QM Entropy and Discrete Physics 9.45 - 10.25 G.G. Emch: Algebraic Structures of Quantum Ergodic Theory 10.30 - 11.00 K.B. Sinha: Dynamical Semigroups and Weyl Group 11.05 - 11.30 Break 11.30 - 12.00 Doebner: 12.05 - 12.35 G.A. Goldin: Current Algebra and Nonlinearity in Quantum Theory 12.40 - 13.10 V.A. Slobodenyuk: Convergence ot the Schwinger-De Witt expansion for some potentials 13.15 - 14.45 Break SESSION A Dyanmics, irreversibility and stochastics Measurement and fuzzyness 14.45 - 15.15 F. Hofmann, (A. Rieckers): Phase Dynamics at the SQUID and Macro-Realism 15.20 - 15.40 S. Zanzinger: On informational divergences between states of general statistical theories 15.45 - 16.05 D.E. Liebscher, (S. Antoci): Wentzel's Path Integrals 16.10 - 16.30 L.P. Horwitz: Lax Philips Theory and Quantum Evolution 16.35 - 16.55 A. Luczak: Properties of Ergodic Projection for Quantum Dynamical Semigroups 17.00 - 17.30 Break 17.30 - 17.50 B. Riecan: On probability theory on MV algebras 17.55 - 18.15 B. Coecke: A compatible axiomatics for Context Dependence and for Correlations 18.20 - 18.40 S. Aerts: From Quantum to Classical: A Probabilistic study 18.45 - 19.05 F. Valckenborgh: A model with varying fluctuations in the measurement context SESSION B Order Structures 14.45 - 15.15 C. Faggian, (G. Sambin): From basic logic to quantum logic with cut-elimination 15.20 - 15.50 K.J. Al-Agha: 15.55 - 16.25 R. Giuntini: From Unsharp Orthoalgebras to Quantum MV-Algebra 16.30 - 16.50 F. Katrnoska: On some Properties of the Rings of Continnous Functions Defined on Stonean Spaces 16.55 - 17.30 Break 17.30 - 17.50 J. Harding, (M. Janowitz): A Bundle Representation for Continnous Geometries 17-55 - 18.15 Z. Riecanova: On Order-Convergence in Quantum Structures 18.20 - 18.40 J. Paseka: On some duality for Othoposets FRIDAY QUANTUM OPTICS, COMMUNICATION, CRYPTOGRAPHY, AND COMPUTATION 9.00 - 9.40 A.K. Ekert: Quantum Computation: Theory and Experiment 9.45 - 10.25 M. Ohya: Quantum Entropies and Their Application of Fractal, Complexity 10.30 - 11.00 R. Alicki: Quantum Communication Channels 11.05 - 11.30 Break 11.30 - 12.00 S.M. Chumakov, (K.-E.Hellwig, A.B. Klimov): Entropy and Purity of Quantum Interacting Subsystems 12.05 - 12.35 A. Orlowski: Reconstruction of Quantum States from Results of Quantum Measurements 12.40 - 13.00 G. Castagnoli: Quantum Nondeterministic Computation based on a Statistics Superselection Rule 13.05 - 14.45 Break SESSION A Quantum Optics, Communication, Cryptography, and Computation Order Structures 14.45 - 15.15 R. Werner: Entanglement and Correlations 15.20 - 15.40 O. Nanasiova: D-Sets and Abelian Groups 15.45 - 16.05 A. Wilce, (D.V. Feldman): Abelian Extensions of Quantum Logics 16.10 - 16.30 F. Kopka: Boolan D-Poset as the Factor-Space of the Borel Sets by an Observable 16.35 -16.55 K. Ravindran: On effect algebras with $\phi$-symmetry 17.00 - 17.30 Break 17.30 - 17.50 R. Mayet: Some characterizations of the underlying skew field of a generalized Hilbert ortholattice by isomorphisms 17.55 - 18.15 A.A. Grib, (R.R. Zapatrin): Some aspects of quantum topology SESSION B Measurement and Fuzzyness 14.45 - 15.15 P.J. Lahti, (M. Maczynski9: Coherent states and number-phase uncertainty relations 15.20 - 15.50 J. Pykacz: Fuzzy Quantum Logics as a Basis for Quantum Probality Theory 15.55 - 16.25 G. Cattaneo, (F. Laudisa): Axiomatic Unsharp Quantum Mechanics 16.30 - 17.00 M. Mensky: Continuously measured (open) systems and the Action Uncertainty Principle 17.05 - 17.30 Break 17.30 - 18.00 H.-H. von Borzeszkowki: On the Measurability of Electromagnetic and Gravitational Fields 18.05 - 18.25 T. Breuer: The Quantum Measurement Problem - a Case for Goedel? 18.30 - 18.50 P. Kienzler Model of a Joint Measurement of Different Spin Components 18.55 - 19.15 M. del Seta, (G. Cattaneo): A problem for no-collapse interpretations of quantum mechanics SATURDAY KNOWLEDGE, PHILOSOPHY, INTERPRETATION 9.00 - 9.40 J. Butterfield: Philosophical Aspects of Consistent Histories 9.45 - 10.05 A. Kent: 10.10 - 10.30 N. Linden: The structure and characterization of decoherence functionals in the constistent histories approach to generalized quantum theory 10.35 - 10.55 A. Rimini: Decoherent histories and uniqueness of the description of the world 11.00 - 11.20 Break 11.20 - 11.40 M. Drieschner: Parts and Composition - a Key to the Structure of Physical Logic 11.45 - 12.05 G. Szabo: Remarks on Reichenbach's definition of common cause 12.10 - 12.30 P.E. Vermaas: How the Modal Interpretation of Quantum Mechanics proposed by Kochen, Dieks and Healey define non-classical probabilities 12.35 - 12.55 M. Dickson: Faux - Boolean Algebras and Classical Logic in the Modal Interpretation POSTER SESSION posters: Order Structures F. Sultanbekov: Solving Problems of Finite Concrete Logics with Help of a PC W.D. Miller: Quasi-Heyting Algebras: A New Class of Lattices R.R. Zapatrin: Poset Toolkit: From Quantum Logic to Quantum Gravity A. Wilce: Manuals of Local Bijections posters: Algebraic Structures S. Goldstein: L_p-spaces for a class of C*-algebras posters: Relativity A. Burinskii: Kerr Geometry as a Background for Spinning Particles H. Lyre: Quantum Space-Time and Tetrads S.M. Mayburov: State Vector Collapse, nonequivalent representations of QED and Quantum Space-Time Transformations S.P. Hong, H.S. Bahn: Isoperimetric Inequalities in the Minkowski 2-Spacetime poster posters: Dyanmics, irreversibility, and stochastics Belavkin: Quantum Causality, Nonlinear Filtering and Quantum Nondemolition Principle R. Mansouri, S. Khosravi: Quantum Mechanics and Equivalent Lagrangians M.T. Hussein, N.M. Hassan: High Energy Electron Proton Scattering in View of Born Approximation N. Watanabe, M. Ohya, D. Petz: On Quantum Capacity posters: Relation of classical to quantum D. Aerts, B. D'Hooghe: The Structure of the Algebra of Observables in the Intermediate Situation M.G.A. Paris: Detection of Phase Space Observables and Quantum State Measurement posters: Measure Structures A. Jadczyk: Time and events L. Mayants: Theory of Particles Wave Properties posters: Measurement and Fuzzyness M. Leckey: Spontaneous Localisation, Wavefunction Realism, Complexity, M. Czachor: Noncommuting Position Operators, their Covariance and how to test them in EPR-Type Experiments F. Petruccione, H.-P. Breuer: Quantum measurement and stochastic processes in projective Hilbert spaces M. Mensky: The path group in gauge theories and gravity M. Mensky, J. Audretsch: Continuous fuzzy measurement of energy for a two-level system A. Rossi: Theory and Experiment from Classical to Quantum Physics posters: Knowledge, Philosophy and Interpretation Bacciagaluppi: Bohm-Bell Dynamics fore the Modal Interpretation F. Laudisa: Context-Independence as a Statistical Property of Hidden Variable Theories posters: Science, Philosohy, and beyond G. Kalmbach Does there exist a perpetuum mobile?