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Geometry of Derivation, Volume III: Classification of Skewfield Flocks [Kietas viršelis]

(Mathematics Department University of Iowa. Emeritus Professor Iowa City, Iowa)
  • Formatas: Hardback, 360 pages, aukštis x plotis: 234x156 mm
  • Išleidimo metai: 30-Jun-2026
  • Leidėjas: CRC Press
  • ISBN-10: 1041290888
  • ISBN-13: 9781041290889
Kitos knygos pagal šią temą:
  • Formatas: Hardback, 360 pages, aukštis x plotis: 234x156 mm
  • Išleidimo metai: 30-Jun-2026
  • Leidėjas: CRC Press
  • ISBN-10: 1041290888
  • ISBN-13: 9781041290889
Kitos knygos pagal šią temą:

Geometry of Derivation, Volume III: Classification of Skewfield Flocks is the third book in a series of books on the topic. This book continues establishing the techniques, examples, and future directions of the specifics of flock theory over skewfields. Like its predecessors, it will primarily deal with connections to the theory of derivable nets and translation planes in both the finite and infinite cases.

Translation planes over non-commutative skewfields have not traditionally had a significant representation in incidence geometry, and derivable nets over skewfields have only been marginally understood. Both are deeply examined in this volume, while ideas of non-commutative algebra are also described in detail, with all the necessary background given a geometric treatment.

Since the work is valid for finite fields, infinite fields, left and right flocks over generalized hyperbolic quadrics, and generalized quadratic cones, there is a number of possibilities. The contribution of this volume is the main classification.

The book continues the presentation in Geometry of Derivations with Applications, Volume I, Johnson (2023), and Geometry of Derivation, Volume II: Theory of Skewfield Flocks (2026) is also available. This is the seventh work in a longstanding series of books on combinatorial geometry by the author, including Subplane Covered Nets, Johnson (2000); Foundations of Translation Planes, Biliotti, Jha, and Johnson (2001); Handbook of Finite Translation Planes, Johnson, Jha, and Biliotti (2007); and Combinatorics of Spreads and Parallelisms, Johnson (2010), all published by CRC Press.



This book establishes the techniques, examples, and future directions of the specifics of flock theory over skewfields. It deals with connections to the theory of derivable nets and translation planes in both the finite and infinite cases. It is the seventh work in a series of research books on combinatorial geometry by the author.

Part 1: The Classification of Flocks
1. The Classes of Flocks
2. General
Theorems of Flocks
3. The Isomorphism Questions Part 2: Multiple
ReplacementRedux
4. Extension of Division Rings
5. Automorphism Groups of
Division Rings
6. The Theorem of Andre
7. Dickson Nearfield Planes
8.
Ostroms Theorem Part 3: Simultaneous Flock Spreads
9. Simultaneous Spreads
of Type 2 Part 4: Semifields over Division Rings
10. Twisted T-Copies
11.
General Skewfield Lifts to Semifields
12. Central Extensions of Degree 3, 4
13. Central Cyclic Extensions Part 5: Lifting Skewsfields-Degree n
14.
General Lifting Part 6: Kantor-Pentilla and CJV Flokki
15. Transform and
CJV-Methods
16. Choices of Representation Part 7: JPW-Hyperbolic Flocks
17.
Idea of Left-Inversion Part 8: Non-Linear Hyperbolic Flocks
18. Adjoining
Inner Derivation Functions
19. Resolved Conical Flocks
20. The Isomorphism
Questions
21. The Hyperbolic Isomorphism Question Part 9: The Baer Flocks
22.
Draxl's Theorem
23. Transposed Baer Flocks Part 10: Anti-Isomorphic Flocks
24. The Hyperbolic Flock Square Part 11: Elation Group Double Covers
25. The
Three Spreads of a Double Cover
26. Skew-Desarguesian Spreads
27. Right
Skew-Desarguesian Spreads Part 12: Strings
28. Strings of Quasfibrations and
Spreads
29. Corresponding Right Flocks Part 13: Switch and Imposter Switch
30. Derivation of Flock Spreads Part 14: Baer Groups over Skewfields
31.
Point-Baer Subplanes of Planes
32. Baer Collineations in Translation Planes
33. Derived Spreads and Baer Groups
34. Deficiency One Flocks of Order p4
35.
to-Interchange-Hyperbolic Spreads
36. to-Interchange-Conical Spreads
37. Left
Inversing Minus One
38. Deficiency One
39. Hyperbolic Skew-Desarguesian
Flocks Part 15: Three Line Problem
40. Do Three Components define a
Pseudo-Regulus?
41. Three Component-Three Point Construction Part 16: The
Flocks and Spreads
42. Anti-Isomorphic Flocks
43. Constructions-Generalized
Lifted
44. 1-A Conical Spreads
45. Flocks from Lifted Types
46. The Open
Types and New Directions
Norman L. Johnson is an Emeritus Professor (2011) at the University of Iowa where he has had ten PhD students. He received his Ph.D. at Washington State University as a student of T.G. Ostrom. He has written 580 research items including articles, books, and chapters available on Researchgate.net. Additionally, he has worked with approximately 40 coauthors and is a previous Editor for International Journal of Pure and Applied Mathematics and Note di Matematica. Dr. Johnson plays ragtime piano and enjoys studying languages and 8-ball pool.