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Taschenbuch. Condizione: Neu. Neuware -Morse-smale fields of geodesics.- Periodic points and topological entropy of one dimensional maps.- Ergodicity of linked twist maps.- Infinitesimal hyperbolicity implies hyperbolicity.- A qualitative singular perturbation theorem.- On a theorem of conley and smoller.- Positively expansive maps of compact manifolds.- An algorithm for finding closed orbits.- Linked twist mappings are almost anosov.- Symbolic dynamics, homology, and knots.- Anomalous anosov flows.- Efficiency vs. hyperbolicity on tori.- Dynamical behavior of geodesic fields.- The growth of topological entropy for one dimensional maps.- Separatrices, non-isolated invariant sets and the seifert conjecture.- Construction of invariant measures absolutely continuous with respect to dx for some maps of the interval.- The estimation from above for the topological entropy of a diffeomorphism.- Ergodicity in (G, )-extensions.- A probabilistic version of bowen ¿ Ruelle's volume lemma.- Periodically forced relaxation oscillations.- Moduli of stability for diffeomorphisms.- Uncountably many distinct topologically hyperbolic equilibria in 4.- Dynamical properties of certain non-commutative skew-products.- A note on explosive flows.- Intertwining invariant manifolds and the lorenz attractor.- Counting compatible boundary conditions.- Stable manifolds for maps.- Singular points of planar vector fields.- Gradient vectorfields near degenerate singularities.- Invariant curves near parabolic points and regions of stability.- Motion under the influence of a strong constraining force.- Conjugacies of topologically hyperbolic fixed points: A necessary condition on foliations.- Coleman's conjecture on topological hyperbolicity.- Population dynamics from game theory.

Taschenbuch. Condizione: Neu. Neuware - Morse-smale fields of geodesics.- Periodic points and topological entropy of one dimensional maps.- Ergodicity of linked twist maps.- Infinitesimal hyperbolicity implies hyperbolicity.- A qualitative singular perturbation theorem.- On a theorem of conley and smoller.- Positively expansive maps of compact manifolds.- An algorithm for finding closed orbits.- Linked twist mappings are almost anosov.- Symbolic dynamics, homology, and knots.- Anomalous anosov flows.- Efficiency vs. hyperbolicity on tori.- Dynamical behavior of geodesic fields.- The growth of topological entropy for one dimensional maps.- Separatrices, non-isolated invariant sets and the seifert conjecture.- Construction of invariant measures absolutely continuous with respect to dx for some maps of the interval.- The estimation from above for the topological entropy of a diffeomorphism.- Ergodicity in (G, )-extensions.- A probabilistic version of bowen ¿ Ruelle's volume lemma.- Periodically forced relaxation oscillations.- Moduli of stability for diffeomorphisms.- Uncountably many distinct topologically hyperbolic equilibria in 4.- Dynamical properties of certain non-commutative skew-products.- A note on explosive flows.- Intertwining invariant manifolds and the lorenz attractor.- Counting compatible boundary conditions.- Stable manifolds for maps.- Singular points of planar vector fields.- Gradient vectorfields near degenerate singularities.- Invariant curves near parabolic points and regions of stability.- Motion under the influence of a strong constraining force.- Conjugacies of topologically hyperbolic fixed points: A necessary condition on foliations.- Coleman's conjecture on topological hyperbolicity.- Population dynamics from game theory.

Buch. Condizione: Neu. Neuware.

Buch. Condizione: Neu. Neuware - The scientific meetings of the !AU are the !AU Symposia, !AU Colloquia, Regional Meetings in Astronomy held under the auspices of the !AU, the Commission Meetings, which may be Joint Meetings of Commissions, and !AU Joint Discussions. This variety means that almost any demand for a meeting can be provided for by the !AU structure, pro vided it is international in character, whatever may be the preferences of the proposers. The !AU General Assemblies include Co~ssion Meetings and Joint Discussions arranged by Commissions, together with the Invited Discourses, and it is these meetings that feature in this volume. The administrative work of the General Assembly is reported in the Transactions of the !AU and the Proceedings of the !AU Symposia, held in the host country or neighbouring countries during the year of a General Assembly, appear in the !AU Symposium Volume series. !AU Collo quium volumes are published separately. The Invited Discourses are a popular feature of the !AU General Assemblies and each of the three discourses presented at the XVIIth General Assembly in Montreal in 1979 appear in this volume. 1979 was the Centenary Year of the birth of Albert Einstein and the occasion was marked, for the !AU, by a discourse of great distinction from Professor S. Chandrasekhar of the University of Chicago, whose contri butions to astrophysics themselves cover fully a half-century. The Invited Discourse by G. Herzberg of the National Research Council of Canada, a Nobel Prizewinner, was equally notable as an !AU occasion.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Beginnings.- Context-free grammar forms.- EOL and ETOL forms.- Other topics.- Past, present and future. 328 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Regular group actions.- Deformation theory.- The quotient of the adjoint action.- The resolution of the adjoint quotient.- Subregular singularities.- Simple singularities.- Nilpotent elements in simple lie algebras.- Deformations of simple singularities. 192 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Preliminaries.- Rings with no G-torsion: Existence of fixed elements, the prime radical and Jacobson radical of RG.- Simple rings: Inner and outer automorphisms, simple fixed rings, R as an RG-module.- Inner and outer automorphisms of semiprime rings.- Rings with no nilpotent elements: Existence of fixed elements and traces.- Chain conditions.- Polynomial identities.- Skew group rings and applications to modules. 140 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Parametrizations of algebroid curves.- Hamburger-noether expansions of algebroid curves.- Characteristic exponents of plane algebroid curves.- Other systems of invariants for the equisingularity of plane algebroid curves.- Twisted algebroid curves. 176 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Notation.- Local operators.- Quasiharmonic spaces.- Topological properties of global transition function.- The addition of local operators on product spaces.- V.- Feller resolvents.- Note on the product of semigroups in hilbert spaces. 120 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The siegel upperhalf plane and the symplectic group.- Main problem and main results.- The case of g=1.- Boundary components and the structure of parabolic subgroups.- Realization as a siegel domain of the third kind, and satake compactification.- Theory of torus embeddings.- Toroidal compactification due to Mumford.- Examples : reduction theory of positive quadratic forms.- An application of the Voronoi compactification to the theory of moduli of polarized abelian varieties. 172 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Discontinuous groups.- Mumford curves via automorphic forms.- The geometry of mumford curves.- Totally split curves and universal coverings.- Analytic reductions of algebraic curves.- Jacobian varieties.- Automorphisms of mumford curves.- The curve of a discontinuous group and its Jacobian variety.- Examples: Groups of quaternions; Whittaker groups.- The group PSL(2, q[t]). 332 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Formal description of programming concepts.- Electronic category theory.- An essay about research on sparse NP complete sets.- Some theoretical aspects of applicative multiprocessing.- On some discrete optimization problems in mass storage systems.- Abstract data types: A retrospective and prospective view.- Controlling behaviours of systems : Some basic concepts and some applications.- Conceptual relations between databases transformed under join and projection.- The weighted Sperner's Set problem.- Proof of a concurrent program finding Euler paths.- A theoretical basis for the systematic proof method.- Consistent semantics for a data flow language.- Analog processes.- An extended polymorphic type system for applicative languages.- A criterion of undecidability of algorithmic theories.- On finding the optimal access path to resolve a relational data base query.- Compound algebraic implementations: An approach to stepwise refinement of software systems.- On and/or schemes.- A term model for CCS.- A mathematical approach to multi-pass parsing.- Abstract implementation of abstract data types.- Parallel algorithms in graph theory: Planarity testing (preliminary version).- On atomic nets and concurrency relations.- Node-label controlled graph grammars (Extended abstract).- A method to compare the descriptive power of different types of Petrinets.- A simple class of algorithmic specifications for abstract software modules.- Inducing patterns of behaviour in distributed system parts.- Van wijngaarden grammars as a special information processing model.- Approaches to concurrency in B-trees.- On a subclass of pseudopolynomial problems.- Decidability of reachability in persistent vector replacement systems.- Generalized heapsort.- Decidability results on a query language for data bases with incomplete information.- New results on completeness and consistency of abstract data types.- Asymptotic complexity of game-searching procedures.- Completeness in classical logic of complex algorithms.- Initially ¿ Restricting algebraic theories.- Schemes for nonsequential processing systems.- Dynamic algebras which are not Kripke structures.- Time and space bounds in producing certain partial orders.- Axioms of algorithmic logic univocally determine semantics of programs.- A logical approach to the problem ¿P=NP ¿.- Verifying concurrent system specifications in COSY.- Deadlocks and livelocks in transition systems.- Descriptional complexity of concurrent processes (preliminary version).- A uniform approach to applicative and imperative features in programming languages.- A resource allocation problem.- An 0(n 2 lognloglogn) expected time algorithm for the all shortest distance problem.- Decision complexity of variants of propositional dynamic logic.- Relativized obliviousness.- Abstract data types as lattices of finitely generated models.- The LR(k) parser.- Substitution systems ¿ A family of system models based on concurrency. 736 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -SALUTIS UNITAS, Unity for Health, an organization 'Uniting physicians of the world to foster better health for all people through international exchange of technological information', was officially founded in 1972 after preceding years of preparation. One of its main objectives is the scientific communication, be it by meeting or by publications. So several scientific meetings could be held, mostly together with other scientific organizations, and resulted in the publication of the respective proceedinqs 1. Studies were commissioned 2 to investigate trends in health care delivery and their socio-economic consequences, which also provided the basis for further investigations 3. So also in 1978 an international congress was organized by SALUTIS UNITAS and sponsored by the international Menarini Foundation under its directorship of Dr. Gorini. This volume is based on the contributions of SALUTIS UNITAS mewbers of this meeting 'Man and his World, Technology and Health', supplemented by further studies and materials. The main objective was to look at various recipients of health care delivery: the individual, the community, the region and the nation. Emphasis was placed on systems analysis, simulation techniques and evaluation. According to the composition of the SALUTIS UNITAS membership, conceptual and interdisciplinary aspects prevail over descriptions of in-depth methodology,thus providing a broad access to the problems investigated. For the Editors Amonqst others see: Mas~, E., Collen, ~.F., Gorini, S. (Eds): The Computer in Health Care Systems in Some European Countries and in the United States (Piccin, Padua 1976). 256 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Morse-smale fields of geodesics.- Periodic points and topological entropy of one dimensional maps.- Ergodicity of linked twist maps.- Infinitesimal hyperbolicity implies hyperbolicity.- A qualitative singular perturbation theorem.- On a theorem of conley and smoller.- Positively expansive maps of compact manifolds.- An algorithm for finding closed orbits.- Linked twist mappings are almost anosov.- Symbolic dynamics, homology, and knots.- Anomalous anosov flows.- Efficiency vs. hyperbolicity on tori.- Dynamical behavior of geodesic fields.- The growth of topological entropy for one dimensional maps.- Separatrices, non-isolated invariant sets and the seifert conjecture.- Construction of invariant measures absolutely continuous with respect to dx for some maps of the interval.- The estimation from above for the topological entropy of a diffeomorphism.- Ergodicity in (G, )-extensions.- A probabilistic version of bowen ¿ Ruelle's volume lemma.- Periodically forced relaxation oscillations.- Moduli of stability for diffeomorphisms.- Uncountably many distinct topologically hyperbolic equilibria in 4.- Dynamical properties of certain non-commutative skew-products.- A note on explosive flows.- Intertwining invariant manifolds and the lorenz attractor.- Counting compatible boundary conditions.- Stable manifolds for maps.- Singular points of planar vector fields.- Gradient vectorfields near degenerate singularities.- Invariant curves near parabolic points and regions of stability.- Motion under the influence of a strong constraining force.- Conjugacies of topologically hyperbolic fixed points: A necessary condition on foliations.- Coleman's conjecture on topological hyperbolicity.- Population dynamics from game theory. 516 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Morse-smale fields of geodesics.- Periodic points and topological entropy of one dimensional maps.- Ergodicity of linked twist maps.- Infinitesimal hyperbolicity implies hyperbolicity.- A qualitative singular perturbation theorem.- On a theorem of conley and smoller.- Positively expansive maps of compact manifolds.- An algorithm for finding closed orbits.- Linked twist mappings are almost anosov.- Symbolic dynamics, homology, and knots.- Anomalous anosov flows.- Efficiency vs. hyperbolicity on tori.- Dynamical behavior of geodesic fields.- The growth of topological entropy for one dimensional maps.- Separatrices, non-isolated invariant sets and the seifert conjecture.- Construction of invariant measures absolutely continuous with respect to dx for some maps of the interval.- The estimation from above for the topological entropy of a diffeomorphism.- Ergodicity in (G, )-extensions.- A probabilistic version of bowen ¿ Ruelle's volume lemma.- Periodically forced relaxation oscillations.- Moduli of stability for diffeomorphisms.- Uncountably many distinct topologically hyperbolic equilibria in 4.- Dynamical properties of certain non-commutative skew-products.- A note on explosive flows.- Intertwining invariant manifolds and the lorenz attractor.- Counting compatible boundary conditions.- Stable manifolds for maps.- Singular points of planar vector fields.- Gradient vectorfields near degenerate singularities.- Invariant curves near parabolic points and regions of stability.- Motion under the influence of a strong constraining force.- Conjugacies of topologically hyperbolic fixed points: A necessary condition on foliations.- Coleman's conjecture on topological hyperbolicity.- Population dynamics from game theory. 516 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -1 Introduction.- 2 Hereditary lock resolution.- 3 Completeness of HL-resolution.- 4 Models.- 5 Discussion of HLR. 260 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware 352 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The anisotropic magnetic chain in a longitudinal field.- The Ising chain in a skew magnetic field.- The heisenberg-Ising chain at zero temperature.- Hydrodynamics of the heisenberg paramagnet.- Solitons and magnons in the classical heisenberg chain. 184 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Beginnings.- Context-free grammar forms.- EOL and ETOL forms.- Other topics.- Past, present and future.Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 328 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Regular group actions.- Deformation theory.- The quotient of the adjoint action.- The resolution of the adjoint quotient.- Subregular singularities.- Simple singularities.- Nilpotent elements in simple lie algebras.- Deformations of simple singularities.Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 192 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Parametrizations of algebroid curves.- Hamburger-noether expansions of algebroid curves.- Characteristic exponents of plane algebroid curves.- Other systems of invariants for the equisingularity of plane algebroid curves.- Twisted algebroid curves.Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 176 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Notation.- Local operators.- Quasiharmonic spaces.- Topological properties of global transition function.- The addition of local operators on product spaces.- V.- Feller resolvents.- Note on the product of semigroups in hilbert spaces.Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 120 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Preliminaries.- Rings with no G-torsion: Existence of fixed elements, the prime radical and Jacobson radical of RG.- Simple rings: Inner and outer automorphisms, simple fixed rings, R as an RG-module.- Inner and outer automorphisms of semiprime rings.- Rings with no nilpotent elements: Existence of fixed elements and traces.- Chain conditions.- Polynomial identities.- Skew group rings and applications to modules.Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 140 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware 244 pp. Englisch, Französisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -The siegel upperhalf plane and the symplectic group.- Main problem and main results.- The case of g=1.- Boundary components and the structure of parabolic subgroups.- Realization as a siegel domain of the third kind, and satake compactification.- Theory of torus embeddings.- Toroidal compactification due to Mumford.- Examples : reduction theory of positive quadratic forms.- An application of the Voronoi compactification to the theory of moduli of polarized abelian varieties.Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 172 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Discontinuous groups.- Mumford curves via automorphic forms.- The geometry of mumford curves.- Totally split curves and universal coverings.- Analytic reductions of algebraic curves.- Jacobian varieties.- Automorphisms of mumford curves.- The curve of a discontinuous group and its Jacobian variety.- Examples: Groups of quaternions; Whittaker groups.- The group PSL(2, q[t]).Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 332 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The wealth of the natural sciences no longer consists in the abundance of facts, but in the way they are linked together. ALEXANDER VON HUMBOLDT There is no dearth of books on ecology. Why write yet another Each person is different, and each views the problems in a different way. Each emphasizes different aspects and describes them in a different style. When I was a student I often found certain books more helpful than others, and I still think it is useful to have a variety of presentations from which to choose. This variety also allows the student to appreciate the diversity within the field of ecology. I have devoted considerable effort to making this book readable. Throughout I have refrained from using specialized terminology - thus also avoiding the problem that many terms are used differently in the various areas of ecology. Straightforward English is quite sufficient to describe complicated situations. Furthermore, precisely defined terms are usually associated with detailed quantitative descriptions, whereas we are concerned with a general understanding of the dynamics of ecology. For similar reasons I have tried to rely as little as possible on mathematical discussions. All too often, in recent years, people have overlooked the fact that mathematics - like language - can give only a description, albeit an especially precise one. 304 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -For readers who intend to read this volume without reading the first, some in troductory remarks are in order about the scope of the work and the strategy used in all five volumes to measure the quality of life. In the frrst chapter of Volume I, I reviewed the relevant recent literature on social indicators and so cial reporting, and explained all the general difficulties involved in such work. It would be redundant to repeat that discussion here, but there are some fundamental points that are worth mentioning. Readers who fmd this account too brief should consult the longer discussion. The basic question that will be answered in this work is this: Is there a difference in the quality of life in Canada and the United States of America, and if so, in which country is it better Alternatively, one could put the question thus: If one individual were randomly selected out of Canada and another out of the United States, would there be important qualitative differences, and if so, which one would probably be better om To simplify matters, I often use the terms Canadian' and 'American' as abbreviations for 'a randomly selected resident' of Canada or the United States, respec tively. 272 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -to Techniques.- Initial Application in Melbourne.- Growth Corridor Studies.- Other Topaz Studies in Melbourne.- Initial Application in Blacksburg.- Water and Sewer Cost Models.- Energy Studies.- Regional Level Applications.- Water Supply Catchment Planning.- Campus Planning.- Commercial Building Planning.- Hospital Planning.- The use of Modelling in the Planning Process.- Recent Advances Incorporating Diversity, Entropy, Utility, and Information Theory.- A Summary Evaluation. 368 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Formal description of programming concepts.- Electronic category theory.- An essay about research on sparse NP complete sets.- Some theoretical aspects of applicative multiprocessing.- On some discrete optimization problems in mass storage systems.- Abstract data types: A retrospective and prospective view.- Controlling behaviours of systems : Some basic concepts and some applications.- Conceptual relations between databases transformed under join and projection.- The weighted Sperner's Set problem.- Proof of a concurrent program finding Euler paths.- A theoretical basis for the systematic proof method.- Consistent semantics for a data flow language.- Analog processes.- An extended polymorphic type system for applicative languages.- A criterion of undecidability of algorithmic theories.- On finding the optimal access path to resolve a relational data base query.- Compound algebraic implementations: An approach to stepwise refinement of software systems.- On and/or schemes.- A term model for CCS.- A mathematical approach to multi-pass parsing.- Abstract implementation of abstract data types.- Parallel algorithms in graph theory: Planarity testing (preliminary version).- On atomic nets and concurrency relations.- Node-label controlled graph grammars (Extended abstract).- A method to compare the descriptive power of different types of Petrinets.- A simple class of algorithmic specifications for abstract software modules.- Inducing patterns of behaviour in distributed system parts.- Van wijngaarden grammars as a special information processing model.- Approaches to concurrency in B-trees.- On a subclass of pseudopolynomial problems.- Decidability of reachability in persistent vector replacement systems.- Generalized heapsort.- Decidability results on a query language for data bases with incomplete information.- New results on completeness and consistency of abstract data types.- Asymptotic complexity of game-searching procedures.- Completeness in classical logic of complex algorithms.- Initially - Restricting algebraic theories.- Schemes for nonsequential processing systems.- Dynamic algebras which are not Kripke structures.- Time and space bounds in producing certain partial orders.- Axioms of algorithmic logic univocally determine semantics of programs.- A logical approach to the problem 'P=NP '.- Verifying concurrent system specifications in COSY.- Deadlocks and livelocks in transition systems.- Descriptional complexity of concurrent processes (preliminary version).- A uniform approach to applicative and imperative features in programming languages.- A resource allocation problem.- An 0(n 2 lognloglogn) expected time algorithm for the all shortest distance problem.- Decision complexity of variants of propositional dynamic logic.- Relativized obliviousness.- Abstract data types as lattices of finitely generated models.- The LR(k) parser.- Substitution systems - A family of system models based on concurrency.Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 736 pp. Englisch.