k strambach (24 Ergebnisse)

Originalbroschur. Zustand: Sehr gut. S. 473-628. Ein gutes und sauberes Exemplar. - G. CALVARUSO, R. A. MARINOSCI Homogeneous geodesies of non-unimodular Lorentzian Lie groups and naturally reductive Lorentzian spaces in dimension three -- M. KALKA, G. PATRIZIO Finite type Monge-Ampere foliations -- C. WALSH The horofunction boundary of the Hilbert geometry -- C. CADMAN, R. LAZA Counting the hyperplane sections with fixed invariants of a plane quintic three approaches to a classical enumerative problem -- M. COPPENS Totally non-real divisors in linear systems on smooth real curves -- M. E. ALONSO, D. HARAN Covers of Klein surfaces -- Y. FUKUMA A classification of polarized manifolds by the sectional Betti number and the sectional Hodge number -- G. AVERKOV, H. MARTINI On reduced polytopes and antipodality. Sprache: Englisch Gewicht in Gramm: 550.

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Hardcover. Zustand: Sehr gut. Proceedings of the NATO Advanced Study Institut held at Bad Windsheim, July 21 - August 1, 1980. Dordrecht, Reidel (1981). gr.8°. Some figs. XI, 430 p. OCloth. with dust jacket. (edge slightly foxed).- NATO Advanced Study Institute Series.- With contributions by G. Pickert, H. Karzel, J.C. Ferrar, W. Benz, A. Barlotti, O.H. Kregel, T.G. Ostrom, H. Mäurer, H. Lüneburg, A. Wagner, E.E. Shult, H. Salzmann, R. Löwen, A. Herzer, H. Freudenthal.

Hardcover. Zustand: Sehr gut. Dordrecht, Reidel (1985). gr.8°. XI, 567 p. Hardbound. (slightly browned).- NATO Asi Series, Series C: Mathematical and Physical Sciences, 160.- Proceedings of the NATO Advanced Study Institute on Rings and Geometry, Istanbul, Turkey, September 2-14, 1984.

Hardcover. Zustand: Sehr gut. Dordrecht, Kluwer (1991). gr.8°. XV, 446 S. Hardbound. (slightly browned).- NATO ASI Series, Series C: Mathematical and Physical Sciences, Vol.333.

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Zustand: New. In.

Taschenbuch. Zustand: Neu. Geometry - von Staudt's Point of View | Proceedings of the NATO Advanced Study Institute held at Bad Windsheim, West Germany, July 21-August 1,1980 | P. Plaumann (u. a.) | Taschenbuch | xii | Englisch | 2011 | Springer | EAN 9789400984912 | Verantwortliche Person für die EU: Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg, juergen[dot]hartmann[at]springer[dot]com | Anbieter: preigu.

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Buch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - Ever since F. Klein designed his 'Erlanger programm', geometries have been studied in close connection with their groups of automorphisms. It must be admitted that the presence of a large automorphismgroup does not always have strong implications for the incidence-th- retical behaviour of a geometry. For exampl~ O. H. Kegel and A. Schleiermacher [Geometriae Dedicata 2, 379 - 395 (1974)J constructed a projective plane with a transitive action of its collineation group on quadrangles, in which, nevertheless every four points generate a free subplane. However, there are several important special classes of geometries, in which strong implications are present. For instance, every finite projective plane with a doubly transitive collineation group is pappian (Theorem of Ostrom-Wagner), and every compact connected projective plane with a flag-transitive group of continuous collineations is a Moufang plane (H. Salzmann, Pac. J. Math. ~, 217 - 234 (1975)]. Klein's point of view has been very useful for numerous incidence structures and has established an intimate connection between group theory and geometry vii P. Plaumann and K. Strambach (eds. ), Geometry - von Staudt's Point of View, vii-xi. Copyright 1981 by D. Reidel Publishing Company. viii PREFACE 1. 1:1ich is a guidepost for every modern t:reat:ment of geometry. A few decades earlier than Klein's proposal, K. G. Ch. von Staudt stated a theorem which indicates a different point of view and is nowadays sometimes called the 'Fundamental Theorem of Projective Geometry'.

Taschenbuch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - Ever since F. Klein designed his 'Erlanger programm', geometries have been studied in close connection with their groups of automorphisms. It must be admitted that the presence of a large automorphismgroup does not always have strong implications for the incidence-th- retical behaviour of a geometry. For exampl~ O. H. Kegel and A. Schleiermacher [Geometriae Dedicata 2, 379 - 395 (1974)J constructed a projective plane with a transitive action of its collineation group on quadrangles, in which, nevertheless every four points generate a free subplane. However, there are several important special classes of geometries, in which strong implications are present. For instance, every finite projective plane with a doubly transitive collineation group is pappian (Theorem of Ostrom-Wagner), and every compact connected projective plane with a flag-transitive group of continuous collineations is a Moufang plane (H. Salzmann, Pac. J. Math. ~, 217 - 234 (1975)]. Klein's point of view has been very useful for numerous incidence structures and has established an intimate connection between group theory and geometry vii P. Plaumann and K. Strambach (eds. ), Geometry - von Staudt's Point of View, vii-xi. Copyright 1981 by D. Reidel Publishing Company. viii PREFACE 1. 1:1ich is a guidepost for every modern t:reat:ment of geometry. A few decades earlier than Klein's proposal, K. G. Ch. von Staudt stated a theorem which indicates a different point of view and is nowadays sometimes called the 'Fundamental Theorem of Projective Geometry'.

Zustand: Sehr gut. Zustand: Sehr gut | Seiten: 468 | Sprache: Englisch | Produktart: Bücher | Every group is represented in many ways as an epimorphic image of a free group. It seems therefore futile to search for methods involving generators and relations which can be used to detect the structure of a group. Nevertheless, results in the indicated direction exist. The clue is to ask the right question. Classical geometry is a typical example in which the factorization of a motion into reflections or, more generally, of a collineation into central collineations, supplies valuable information on the geometric and algebraic structure. This mode of investigation has gained momentum since the end of last century. The tradition of geometric-algebraic interplay brought forward two branches of research which are documented in Parts I and II of these Proceedings. Part II deals with the theory of reflection geometry which culminated in Bachmann's work where the geometric information is encoded in properties of the group of motions expressed by relations in the generating involutions. This approach is the backbone of the classification of motion groups for the classical unitary and orthogonal planes. The axioms in this char­ acterization are natural and plausible. They provoke the study of consequences of subsets of axioms which also yield natural geometries whose exploration is rewarding. Bachmann's central axiom is the three reflection theorem, showing that the number of reflections needed to express a motion is of great importance.

Paperback. Zustand: Brand New. 448 pages. 9.25x6.10x1.01 inches. In Stock.

Taschenbuch. Zustand: Neu. Generators and Relations in Groups and Geometries | A. Barlotti (u. a.) | Taschenbuch | xv | Englisch | 2012 | Springer | EAN 9789401054966 | Verantwortliche Person für die EU: Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg, juergen[dot]hartmann[at]springer[dot]com | Anbieter: preigu.

Taschenbuch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - Every group is represented in many ways as an epimorphic image of a free group. It seems therefore futile to search for methods involving generators and relations which can be used to detect the structure of a group. Nevertheless, results in the indicated direction exist. The clue is to ask the right question. Classical geometry is a typical example in which the factorization of a motion into reflections or, more generally, of a collineation into central collineations, supplies valuable information on the geometric and algebraic structure. This mode of investigation has gained momentum since the end of last century. The tradition of geometric-algebraic interplay brought forward two branches of research which are documented in Parts I and II of these Proceedings. Part II deals with the theory of reflection geometry which culminated in Bachmann's work where the geometric information is encoded in properties of the group of motions expressed by relations in the generating involutions. This approach is the backbone of the classification of motion groups for the classical unitary and orthogonal planes. The axioms in this char acterization are natural and plausible. They provoke the study of consequences of subsets of axioms which also yield natural geometries whose exploration is rewarding. Bachmann's central axiom is the three reflection theorem, showing that the number of reflections needed to express a motion is of great importance.

Buch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - Every group is represented in many ways as an epimorphic image of a free group. It seems therefore futile to search for methods involving generators and relations which can be used to detect the structure of a group. Nevertheless, results in the indicated direction exist. The clue is to ask the right question. Classical geometry is a typical example in which the factorization of a motion into reflections or, more generally, of a collineation into central collineations, supplies valuable information on the geometric and algebraic structure. This mode of investigation has gained momentum since the end of last century. The tradition of geometric-algebraic interplay brought forward two branches of research which are documented in Parts I and II of these Proceedings. Part II deals with the theory of reflection geometry which culminated in Bachmann's work where the geometric information is encoded in properties of the group of motions expressed by relations in the generating involutions. This approach is the backbone of the classification of motion groups for the classical unitary and orthogonal planes. The axioms in this char acterization are natural and plausible. They provoke the study of consequences of subsets of axioms which also yield natural geometries whose exploration is rewarding. Bachmann's central axiom is the three reflection theorem, showing that the number of reflections needed to express a motion is of great importance.

Paperback. Zustand: Brand New. 468 pages. 9.25x6.10x1.06 inches. In Stock.

Zustand: New. In.

Zustand: New. In.

Zustand: New. Proceedings of the NATO Advanced Study Institute, Castelvecchio Pascoli, Lucca, Italy, April 1-14, 1990 Editor(s): Barlotti, A.; Ellers, E.W.; Plaumann, P.; Strambach, K. Series: NATO Science Series C. Num Pages: 447 pages, biography. BIC Classification: PBG. Category: (P) Professional & Vocational; (UP) Postgraduate, Research & Scholarly. Dimension: 234 x 156 x 25. Weight in Grams: 829. . 1991. Hardback. . . . . Books ship from the US and Ireland.

Buch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - When looking for applications of ring theory in geometry, one first thinks of algebraic geometry, which sometimes may even be interpreted as the concrete side of commutative algebra. However, this highly de veloped branch of mathematics has been dealt with in a variety of mono graphs, so that - in spite of its technical complexity - it can be regarded as relatively well accessible. While in the last 120 years algebraic geometry has again and again attracted concentrated interes- which right now has reached a peak once more - , the numerous other applications of ring theory in geometry have not been assembled in a textbook and are scattered in many papers throughout the literature, which makes it hard for them to emerge from the shadow of the brilliant theory of algebraic geometry. It is the aim of these proceedings to give a unifying presentation of those geometrical applications of ring theo~y outside of algebraic geometry, and to show that they offer a considerable wealth of beauti ful ideas, too. Furthermore it becomes apparent that there are natural connections to many branches of modern mathematics, e. g. to the theory of (algebraic) groups and of Jordan algebras, and to combinatorics. To make these remarks more precise, we will now give a description of the contents. In the first chapter, an approach towards a theory of non-commutative algebraic geometry is attempted from two different points of view.

Taschenbuch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - When looking for applications of ring theory in geometry, one first thinks of algebraic geometry, which sometimes may even be interpreted as the concrete side of commutative algebra. However, this highly de veloped branch of mathematics has been dealt with in a variety of mono graphs, so that - in spite of its technical complexity - it can be regarded as relatively well accessible. While in the last 120 years algebraic geometry has again and again attracted concentrated interes- which right now has reached a peak once more - , the numerous other applications of ring theory in geometry have not been assembled in a textbook and are scattered in many papers throughout the literature, which makes it hard for them to emerge from the shadow of the brilliant theory of algebraic geometry. It is the aim of these proceedings to give a unifying presentation of those geometrical applications of ring theo~y outside of algebraic geometry, and to show that they offer a considerable wealth of beauti ful ideas, too. Furthermore it becomes apparent that there are natural connections to many branches of modern mathematics, e. g. to the theory of (algebraic) groups and of Jordan algebras, and to combinatorics. To make these remarks more precise, we will now give a description of the contents. In the first chapter, an approach towards a theory of non-commutative algebraic geometry is attempted from two different points of view.

Paperback. Zustand: Brand New. 568 pages. 9.45x6.30x1.32 inches. In Stock.