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Showing 1 - 8 of 8 matches in All Departments

Simple Theories (Hardcover, 2000 ed.): Frank O. Wagner Simple Theories (Hardcover, 2000 ed.)
Frank O. Wagner
R2,913 R1,596 Discovery Miles 15 960 Save R1,317 (45%) Ships in 12 - 17 working days

Simplicity theory is an extension of stability theory to a wider class of structures, containing, among others, the random graph, pseudo-finite fields, and fields with a generic automorphism. Following Kim's proof of forking symmetry' which implies a good behaviour of model-theoretic independence, this area of model theory has been a field of intense study. It has necessitated the development of some important new tools, most notably the model-theoretic treatment of hyperimaginaries (classes modulo type-definable equivalence relations). It thus provides a general notion of independence (and of rank in the supersimple case) applicable to a wide class of algebraic structures. The basic theory of forking independence is developed, and its properties in a simple structure are analyzed. No prior knowledge of stability theory is assumed; in fact many stability-theoretic results follow either from more general propositions, or are developed in side remarks. Audience: This book is intended both as an introduction to simplicity theory accessible to graduate students with some knowledge of model theory, and as a reference work for research in the field.

Simple Theories (Paperback, Softcover reprint of hardcover 1st ed. 2000): Frank O. Wagner Simple Theories (Paperback, Softcover reprint of hardcover 1st ed. 2000)
Frank O. Wagner
R1,469 Discovery Miles 14 690 Ships in 10 - 15 working days

Simplicity theory is an extension of stability theory to a wider class of structures, containing, among others, the random graph, pseudo-finite fields, and fields with a generic automorphism. Following Kim's proof of forking symmetry' which implies a good behaviour of model-theoretic independence, this area of model theory has been a field of intense study. It has necessitated the development of some important new tools, most notably the model-theoretic treatment of hyperimaginaries (classes modulo type-definable equivalence relations). It thus provides a general notion of independence (and of rank in the supersimple case) applicable to a wide class of algebraic structures. The basic theory of forking independence is developed, and its properties in a simple structure are analyzed. No prior knowledge of stability theory is assumed; in fact many stability-theoretic results follow either from more general propositions, or are developed in side remarks. Audience: This book is intended both as an introduction to simplicity theory accessible to graduate students with some knowledge of model theory, and as a reference work for research in the field.

Alice in France - The World War I Letters of Alice M. O'Brien (Paperback): Nancy O Wagner Alice in France - The World War I Letters of Alice M. O'Brien (Paperback)
Nancy O Wagner
R446 R375 Discovery Miles 3 750 Save R71 (16%) Ships in 10 - 15 working days
Hanf Und Hartfasern (German, Paperback, Softcover Reprint of the Original 1st 1927 ed.): O. Heuser, P Koenig, O. Wagner, G. V.... Hanf Und Hartfasern (German, Paperback, Softcover Reprint of the Original 1st 1927 ed.)
O. Heuser, P Koenig, O. Wagner, G. V. Frank, H. Oertel, …
R2,310 Discovery Miles 23 100 Ships in 10 - 15 working days

1m vorliegenden Band hat del' Ranf, die einheimische Seilel'pflanze, naturgemiW die eingehendste Darstellung erfahren, insbesondere die Botanik 1 und Kultur des Ranfes ), doch auch seine technische Verarbeitung und Wirtschaft. Bei den anderen Fasern schien sich nach del' botanischen Seite ein naheres Eingehen zu eriibrigen; del' Abschnitt Weltwirtschaft und 2 Landwirtschaft enthalt hier wohl alles Notwendige ). Die Trennung del' technologischen Kapitel entspricht zum Teil del' industriellen Gestaltung. MaJ3gebend war abel' del' 'Vunsch nach abgerundetel' Behandlung jedes Gebietes; geringfiigige Ubel'schneidungen diirften auch als nicht unwill kommene Erganzungen betrachtet werden. Berlin-Dahlem, April 1927. Del' Herausgebel'. 1) Diesel' Beitrag lag seit 1925 abgeschlossen VOl'. Del' Hanfbau hat unter dem EinfluB del' Kriegs- und Nachkriegszeit eine schnelle Entwicklung durchgemacht, in den letzten Jahren ist aber wieder eine Stagnation eingetreten. 2) Hier sind zur Orientierung auch einige andere Faserarten aufgenommen. I nhal tsverzeichnis. Die Hanqlflanze. Von Professor Dr. Otto Heuser, Danzig. Mit 35 Abbildungen. Seitc Allgemeines. . . . . . . 1 1 Bedeutung und Verbreitung Heimat nnd Geschichte . -. 3 Knltnrformen ...... . 6 11: vrorphologisch-biologisehe Charakteristik. Besehreibnng. . . . 11 16 Gesehleehtsverteilnng . Der Hanfstengel . -. . 22 2S IVachstnm . -. . . . . Der Ban des Stengels . 29 36 Die Bastfaser. .: . . Die Festigkeit der Faser. 41 42 Der Faseranteil. . . . . 50 Botanisch -land wirtschaftliche Charakteristik 50 Klima nnd Standort . . . . . 55 Nahrstoff- nnd Diingerbcdiirfnis Bodenbearbeitnng . 67 69 Saatzeit . Saattiefe . 69 70 Saatmenge 75 Pflege .. 70 Ernte und Aufbewahrung 81 Die weitere Verarbeitung dcr Hanfstengel . S9 8aatgutgewinnung und Ziiehtung. . . . . Die Hanfweltwil'tsehaft. Von Direktor Dr. P. Konig, Berlin. lO5 Deutschland HHi RuI.lland .. lOS Polen ..."

The Light of Egypt (Paperback): Belle M. Wagner, Thomas H. Burgoyne, Henry O Wagner The Light of Egypt (Paperback)
Belle M. Wagner, Thomas H. Burgoyne, Henry O Wagner
R196 Discovery Miles 1 960 Ships in 10 - 15 working days
Trolle - Goten - Wikinger - 111 kleine Geschichten (German, Paperback): Bernd O Wagner Trolle - Goten - Wikinger - 111 kleine Geschichten (German, Paperback)
Bernd O Wagner
R829 Discovery Miles 8 290 Ships in 10 - 15 working days
Aus Traumen wurden Meilen - Rund Ostsee mit der Charteryacht (German, Paperback): Bernd O Wagner Aus Traumen wurden Meilen - Rund Ostsee mit der Charteryacht (German, Paperback)
Bernd O Wagner
R663 Discovery Miles 6 630 Ships in 10 - 15 working days
Kabbelsee - Mein Sommer mit Seume (German, Paperback): Bernd O Wagner Kabbelsee - Mein Sommer mit Seume (German, Paperback)
Bernd O Wagner
R548 Discovery Miles 5 480 Ships in 10 - 15 working days
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