- ISBN: 9781584886051 | 1584886056
- Cover: Hardcover
- Copyright: 2/15/2007
Preface and Acknowledgments | p. xvii |
An Overview | p. 1 |
Translation Plane Structure Theory | p. 5 |
Group Partitions | p. 5 |
Andre's Characterization of Spreads | p. 7 |
Partial Spreads and Translation Nets | p. 13 |
Isomorphisms of Partial Spreads | p. 14 |
Translation Nets | p. 15 |
Partial Spreads and Generalizations | p. 17 |
Subspreads and Planar Groups | p. 18 |
Kernel Subplanes of a Spread | p. 20 |
Intersections of Partial Spreads | p. 22 |
Rational Partial Spreads and Foulser-Covers | p. 23 |
Andre versus Bruck-Bose | p. 25 |
Quasifields | p. 29 |
Coordinates: Spread Set | p. 29 |
Coordinatizing Spreads by Spread Sets | p. 30 |
Labeled Coordinatization | p. 32 |
Quasigroups and Isotopisms | p. 35 |
Pre-Quasifields and Isotopisms | p. 36 |
The Spread of a Pre-Quasifield | p. 37 |
Coordinatization by Pre-Quasifields | p. 38 |
Geometric Interpretations | p. 40 |
Semifield Spreads | p. 42 |
Shears and Spread Sets | p. 46 |
Derivation | p. 47 |
PG(3, q) and the Regulus | p. 48 |
The Fundamental Theorem on Derivation and Projective Space | p. 49 |
The Collineation Group of a Derivable Net | p. 50 |
Structure Theorem for Derivable Nets | p. 53 |
Derivation of Spreads in PG(3, q) | p. 53 |
Frequently Used Tools | p. 55 |
p-Primitive Elements | p. 55 |
Schur's Lemma | p. 55 |
Maschke Complements | p. 55 |
Ostrom Phantom | p. 55 |
Hering-Ostrom | p. 56 |
Structure of Baer Subplanes | p. 56 |
Planar p-Bound of Jha | p. 56 |
Incompatibility and Structure of Baer Subplanes | p. 56 |
Foulser-Johnson | p. 57 |
Sharply Transitive Sets | p. 59 |
The Nearfield Planes | p. 60 |
The Irregular Nearfield Planes | p. 60 |
SL(2, p) x SL(2, p)-Planes | p. 63 |
SL(2, 5)-Exceptional Luneburg Planes | p. 64 |
SL(2, 3)-Exceptional Luneburg Planes | p. 66 |
SL(2, 5) x SL(2, 5)-Planes of Hiramine | p. 67 |
Classical Semifields | p. 71 |
The Knuth Commutative Semifields | p. 71 |
Twisted Fields | p. 72 |
Generalized Twisted Fields | p. 73 |
Dickson Commutative Semifields | p. 75 |
Hughes-Kleinfeld Semifields | p. 75 |
Groups of Generalized Twisted Field Planes | p. 77 |
General Transitivity | p. 82 |
Autotopisms as Triples of Additive Functions | p. 83 |
Isotopism | p. 84 |
Nuclear Fusion in Semifields | p. 91 |
The Seminuclear Homology Groups | p. 94 |
Combinatorics of Seminuclei; Hyperbolic Covers | p. 95 |
Kernel and Fusion | p. 98 |
The Semifield Planes with Two Isomorphic Baer Seminuclei | p. 101 |
The Numbers of Nuclear Subplanes | p. 103 |
Cyclic Semifields | p. 109 |
Jha-Johnson Cyclic Semifields | p. 110 |
The Cofman Problem | p. 111 |
T-Cyclic GL(2, g)-Spreads | p. 113 |
Known GL(2, q)-Planes of Order q[superscript 3] | p. 115 |
Cone Representation Theory | p. 117 |
Cone Representations of Affine Planes | p. 119 |
Andre Net Replacements and Ostrom-Wilke Generalizations | p. 123 |
Ostrom's Replacement Theorems | p. 126 |
Foulser's [lambda]-Planes | p. 131 |
[lambda]-Quasifields | p. 131 |
Collineation Groups of [lambda]-Planes | p. 136 |
Regulus Lifts, Intersections over Extension Fields | p. 143 |
General Regulus Coordinates in [Characters not reproducible] | p. 143 |
Field Extensions of (Partial) Spreads | p. 145 |
Field Extensions of Andre Reguli | p. 147 |
Hyper-Reguli Arising from Andre Hyper-Reguli | p. 153 |
The Generalized Andre Planes of Johnson | p. 153 |
The Existence of Hyper-Reguli of Non-Andre Type | p. 153 |
Translation Planes with Large Homology Groups | p. 159 |
The Generalized Andre Planes with Index 2 Homology Groups | p. 161 |
Net Replacements in the Dickson Nearfield Planes | p. 162 |
Derived Generalized Andre Planes | p. 165 |
The Question of Multiple Hyper-Regulus Replacement | p. 165 |
p-Elements | p. 165 |
Derivable Generalized Andre Planes | p. 166 |
The Classes of Generalized Andre Planes | p. 169 |
Wilke-Zemmer, Order 3[superscript n] | p. 169 |
Narayana Rao-Zemmer Planes | p. 169 |
C-System Nearfields | p. 171 |
Subregular Spreads | p. 175 |
Field Orbits and Fans | p. 178 |
Group-Theoretic Characterization | p. 179 |
Lifting Subregular Spreads | p. 180 |
Walker's Inherited Group Theorem | p. 180 |
Inversion Fixed-Subregular Spreads | p. 181 |
Isomorphism Types | p. 183 |
The Known Subregular Spreads and Subregular Lifting | p. 185 |
Characterizing the Foulser-Ostrom Planes | p. 193 |
SL(2, q)[Characters not reproducible] | p. 194 |
When Is a Plane Subregular? | p. 196 |
Subregular Spreads with Elation Groups of Order 4 | p. 200 |
Large Elation or Baer Groups in Characteristic 2 | p. 201 |
Moving | p. 202 |
Odd Order | p. 204 |
Translation Planes with Many Elations | p. 204 |
Derivable Subregular Planes | p. 206 |
Fano Configurations | p. 211 |
Andre Planes with Fano Configurations | p. 213 |
Fano Configurations in Known Subregular Planes | p. 214 |
Fano Configurations in Generalized Andre Planes | p. 217 |
Planes with Many Elation Axes | p. 219 |
Klein Quadric | p. 223 |
Parallelisms | p. 225 |
Direct Products of Affine Planes | p. 225 |
Desarguesian Partial Parallelisms | p. 228 |
Desarguesian Partial Parallelisms with Deficiency | p. 230 |
Maximal Partial Spreads | p. 231 |
Transitive Parallelisms | p. 235 |
Definition and Some Examples | p. 235 |
SL(2, q) x C[subscript (1+q+q[superscript 2])] and Cyclic Parallelisms | p. 236 |
p-Primitive Parallelism Theorem | p. 237 |
Ovoids | p. 241 |
The Slices of the Unitary Ovoids | p. 241 |
The Slices of the Ree-Tits Ovoids | p. 243 |
Known Ovoids | p. 245 |
Conway-Kleidman-Wilson; Moorhouse Ovoids | p. 246 |
5L(2, 9) and G/N[TildeEqual] A[subscript 5]-Planes | p. 246 |
Slices of the Conway-Kleidman-Wilson Binary Ovoids | p. 248 |
Simple T-Extensions of Derivable Nets | p. 249 |
Spread Sets Containing Fields | p. 249 |
T-Extension | p. 251 |
T-Extension/Transpose | p. 252 |
T-Distortion | p. 253 |
Construction of 2-Dimensional Semifields | p. 254 |
Baer Groups on Parabolic Spreads | p. 257 |
Derivable Line Spreads | p. 257 |
Parabolic Spreads in PG(3, q) | p. 260 |
Algebraic Lifting | p. 263 |
Spread Sets Associated with Line Spreads | p. 263 |
Lifting Spread Sets | p. 264 |
Lifted Semifields | p. 267 |
Chains of Lifts and Contractions | p. 269 |
Lifting Non-Translation Planes | p. 270 |
Semifield Planes of Orders q[superscript 4], q[superscript 6] | p. 271 |
Semifields 6-Dimensional over Their Centers | p. 274 |
Known Classes of Semifields | p. 277 |
The Dickson/Knuth/Hughes-Kleinfeld Semifields | p. 278 |
Knuth Generalized Dickson Semifields | p. 278 |
Hughes-Kleinfeld Semifields | p. 278 |
Knuth Generalized Dickson Semifield of Type (j) | p. 278 |
Ganley Commutative Semifields | p. 279 |
Knuth Binary Semifields | p. 279 |
Kantor-Williams Desarguesian Scions | p. 279 |
Coulter-Matthews Commutative Semifields | p. 280 |
Johnson-Huang Semifields of Order 82 | p. 280 |
Cordero-Figueroa Sporadic Semifield of Order 36 | p. 281 |
Johnson-Marino-Polverino-Trombetti Cyclic Semifields | p. 281 |
Methods of Oyama, and the Planes of Suetake | p. 283 |
Suetake's Planes | p. 287 |
Coupled Planes | p. 289 |
Translation Planes Coupled with Semifield Planes | p. 293 |
Generalized Andre and Inversing Replacements | p. 294 |
Hyper-Reguli | p. 297 |
Andre Nets and Planes | p. 297 |
Non-Andre Hyper-Reguli | p. 300 |
Multiple Hyper-Regulus Planes | p. 303 |
Classifying the Planes | p. 306 |
Subgeometry Partitions | p. 307 |
Group Characterization | p. 309 |
Groups on Multiple Hyper-Reguli | p. 311 |
Isomorphisms of the Fundamental Planes | p. 313 |
Hyper-Reguli of Dimension 3 | p. 315 |
A Few Examples of Cubic Planes | p. 316 |
The Cubic Planes of Culbert and Ebert | p. 317 |
The Hyper-Regulus Planes of Dover | p. 320 |
Elation-Baer Incompatibility | p. 323 |
Generalized Elations | p. 323 |
Properties of SL(2, q) | p. 326 |
Hering-Ostrom Elation Theorem | p. 329 |
Baer Elation Theory | p. 333 |
Odd Order | p. 333 |
Incompatibility: Even Order | p. 334 |
Spreads Admitting Unimodular Sections-Foulser-Johnson Theorem | p. 337 |
The Examples | p. 338 |
Applications | p. 344 |
G/N [TildeEqual] PSL(2, q) | p. 346 |
The Translation-Plane Case | p. 349 |
Spreads of Order q[superscript 2]-Groups of Order q[superscript 2] | p. 351 |
Regular Groups | p. 352 |
Non-Regular Groups | p. 354 |
Transversal Extensions | p. 357 |
Extensions of Derivable Nets | p. 359 |
Geometric Extension | p. 360 |
Planar Transversal Extensions and Dual Spreads | p. 361 |
Translation Extension Nets | p. 362 |
Vector-Space Transversals | p. 365 |
Transposed Spreads and Reconstruction | p. 368 |
Partially Flag-Transitive Planes | p. 370 |
Subplane Covered Nets | p. 372 |
Indicator Sets | p. 373 |
Affine Version | p. 374 |
The Hermitian Sequences | p. 379 |
General Indicator Sets | p. 390 |
Geometries and Partitions | p. 393 |
Divisible Designs | p. 393 |
Inversive, Minkowski and Laguerre Planes | p. 394 |
Deficiency-One Partial Flocks and Baer Groups | p. 398 |
Tubes in PG(3, q) | p. 400 |
Sharply Transitive Sets | p. 401 |
Maximal Partial Spreads | p. 405 |
Ubiquity of Maximal Partial Spreads | p. 406 |
Sperner Spaces | p. 407 |
Sperner Spaces by Derivation | p. 407 |
Conical Flocks | p. 409 |
Spread Sets | p. 409 |
s-Inversion and s-Square | p. 412 |
Ostrom and Flock Derivation | p. 421 |
Flock-Derivations and Ostrom-Derivates | p. 421 |
Baer Groups in Translation Planes | p. 422 |
Flocks of Quadratic Cones | p. 423 |
Generalized Quadrangles, BLT-Sets, Payne-Rogers Recoordinatization | p. 423 |
Ostrom-Derivations and Skeletons | p. 424 |
q[superscript 2]-q[superscript 2] Structure Theory-Even Order | p. 426 |
Fundamental Theorems on Generalized Quadrangles | p. 427 |
Transitive Skeletons | p. 431 |
Double Transitivity | p. 431 |
BLT-Set Examples | p. 433 |
The Penttila Flocks/Spreads | p. 433 |
The Fisher Flocks/Spreads | p. 434 |
Many Ostrom-Derivates | p. 437 |
The Adelaide Flocks/Spreads | p. 437 |
Law-Penttila Flocks/Spreads | p. 437 |
Infinite Classes of Flocks | p. 439 |
Semifield Skeletons | p. 440 |
Monomial Skeletons | p. 441 |
Likeable Skeletons | p. 441 |
Almost Linear Skeletons | p. 441 |
Adelaide Super Skeleton | p. 442 |
Transitive Skeletons | p. 443 |
Rigid Skeletons | p. 443 |
Sporadic Flocks | p. 445 |
Law-Penttila 27 [LessEqual] q [LessEqual] 125 | p. 446 |
Law q = 83,89 | p. 447 |
Lavrauw-Law q = 167 | p. 447 |
Hyperbolic Fibrations | p. 449 |
Homology Groups and Hyperbolic Fibrations | p. 450 |
K[superscript +]-Partial Flocks | p. 452 |
Geometric Constructions | p. 456 |
Spreads with 'Many' Homologies | p. 461 |
Two (q + l)-Homology Groups | p. 462 |
Applications | p. 463 |
Nests of Reguli | p. 471 |
Circle Geometry over a Full Field | p. 474 |
S-Nests of Reguli; q-Nests | p. 477 |
[Characters not reproducible]-Nests of Reguli; (q + 1)-Nests | p. 478 |
[Characters not reproducible]-Nests of Reguli; (q - 1)-Nests | p. 478 |
Double [Characters not reproducible]-Nests of Reguli; 2(q - 1)-Nests-Companion Constructions | p. 479 |
Double-Doubles | p. 480 |
Mixed Nests | p. 480 |
Classification Theorems for t-Nests | p. 483 |
Chains | p. 485 |
Multiple Nests | p. 491 |
Planes of Prime-Square Order | p. 497 |
Even Order | p. 499 |
The De Clerck-Herssens-Thas Double-Nest Plane of Order 11 2 | p. 499 |
A Few Remarks on Isomorphisms | p. 501 |
Fingerprint | p. 501 |
Leitzahl | p. 502 |
Kennzahl | p. 502 |
Flag-Transitive Geometries | p. 503 |
Flag-Transitive Translation Planes | p. 503 |
Flag-Transitive Planes with Spreads in PG(3, q) | p. 504 |
The Known Flag-Transitive Planes with Solvable Group | p. 505 |
Flag-Transitive Planes and Subgeometry Partitions | p. 508 |
Quartic Groups in Translation Planes | p. 509 |
Even-Order Quartic Groups | p. 510 |
Baer Groups | p. 513 |
Double Transitivity | p. 515 |
Doubly Transitive on Line-Size Sets | p. 515 |
Solvable Doubly Transitive Groups | p. 517 |
Non-Solvable Doubly Transitive Groups | p. 519 |
Triangle Transitive Planes | p. 521 |
Known Triangle Transitive Translation Planes | p. 521 |
Hiramine-Johnson-Draayer Theory | p. 523 |
When There Are Two Groups | p. 523 |
Triangle Transitive Planes with Large Homology Groups | p. 526 |
Non-Solvable Triangle Transitive Planes | p. 527 |
Bol Planes | p. 529 |
2/3-Transitive Axial Groups | p. 531 |
Acting Transitively on the Autotopism Triangle | p. 531 |
Doubly Transitive with a Fixed Component | p. 533 |
Doubly Transitive Ovals and Unitals | p. 535 |
Classification of Odd-Order Planes with Doubly Transitive Parabolic Ovals; Enea-Korchmaros | p. 535 |
Doubly Transitive Parabolic Ovals in Even-Order Planes; Biliotti-Jha-Johnson | p. 535 |
Doubly Transitive Hyperbolic Unitals; Biliotti-Jha-Johnson-Montinaro | p. 536 |
Related Group Actions; Parallelisms and Skeletons | p. 537 |
Rank 3 Affine Planes | p. 539 |
Rank k Affine Planes | p. 539 |
Classification of Non-Solvable Rank 3 Affine Planes | p. 542 |
Transitive Extensions | p. 543 |
Quadratic Extension Planes | p. 545 |
Cubic Extensions | p. 546 |
Quartic Extensions | p. 550 |
Solvable Extensions | p. 551 |
Higher-Dimensional Flocks | p. 555 |
Connections and Definitions | p. 555 |
Cyclic Semifields and Hyperbolic Covers | p. 562 |
Transitive Semifield Flat Flocks | p. 564 |
Andre Flat Flocks | p. 566 |
Generalized Andre Planes and Flat Flocks | p. 567 |
j...j-Planes | p. 569 |
Hyperbolic Fibrations Revisited | p. 570 |
j-Planes | p. 573 |
One-Half j-Planes | p. 579 |
Orthogonal Spreads | p. 583 |
The Connection | p. 585 |
Slicing | p. 585 |
Spreading | p. 585 |
Symplectic Groups-The Basics | p. 589 |
The Fundamental Theorem of Symplectic Spreads | p. 589 |
Desarguesian Symplectic Spreads | p. 590 |
Symplectic Flag-Transitive Spreads | p. 597 |
Kantor-Williams Flag-Transitive Spreads | p. 599 |
Expanding the Quadratic Form | p. 601 |
Flag-Transitive Scions of Desarguesian Spreads | p. 614 |
Symplectic Spreads | p. 619 |
Cubical Arrays | p. 619 |
Symplectic Flocks | p. 621 |
Symplectic and Flock Spreads | p. 622 |
The Symplectic Semifield Flock Spreads | p. 623 |
The Omnibus Flock Theorem | p. 627 |
General Semifield 5th Cousins | p. 627 |
When Is a Spread Not Symplectic? | p. 631 |
Symplectic Planes and Affine Homologies | p. 632 |
Self-Transpose | p. 634 |
Symplectically Paired Spreads and Hemisystems | p. 640 |
When Is a Spread Symplectic? | p. 641 |
Dual Line Ovals | p. 641 |
The Associated Designs | p. 642 |
The Translation Dual of a Semifield | p. 643 |
GF(q)-Linear Representation of PG(3,q[superscript n]) | p. 644 |
A Model for [omega]+(6,q[superscript n]) and Its Linear Representation | p. 646 |
The Linear Representation of H | p. 647 |
The Translation Dual | p. 648 |
Unitals in Translation Planes | p. 649 |
Buekenhout's Parabolic Theorem | p. 651 |
Johnson's Theorem on Transitive Parabolic Unitals | p. 653 |
Buekenhout-Metz Unitals | p. 657 |
Buekenhout Hyperbolic Unitals | p. 659 |
Hyperbolic Unital Groups | p. 661 |
Theorem of Johnson-Pomareda on Parabolic Unitals | p. 664 |
Buekenhout-Metz Forms | p. 668 |
Transitive Parabolic Groups | p. 671 |
Doubly Transitive Hyperbolic Unital Groups | p. 673 |
Retraction | p. 677 |
Geometric Lifting | p. 678 |
The Fundamental Theorem on Geometric Lifting | p. 681 |
Baer Subgeometry Partitions | p. 685 |
Maximal Partial Projective Partitions | p. 688 |
Multiple Spread Retraction | p. 693 |
Spreads Admitting Triple Retraction | p. 693 |
Triple and Quadruple Retraction | p. 696 |
Classification of Triply Retractive Semifield Planes | p. 697 |
Transitive Baer Subgeometry Partitions | p. 701 |
Transitive Deficiency-One Partial Baer Subgeometry Partitions | p. 702 |
Transitive Deficiency-One Cases in Larger Dimensions | p. 705 |
Dual BSG's | p. 707 |
Geometric and Algebraic Lifting | p. 709 |
Quasi-Subgeometry Partitions | p. 715 |
Subgeometries | p. 716 |
Fans | p. 717 |
Quasi-Subgeometries | p. 719 |
Fans in Spreads | p. 724 |
Generalized Spreads and Replaceable Translation Sperner Spaces | p. 727 |
Hyper-Regulus Partitions | p. 731 |
Mixed Multiple Hyper-Regulus Replacement | p. 732 |
Non-Andre Quasi-Subgeometry Partitions | p. 733 |
Non-Andre Subgeometry Partitions | p. 734 |
Small-Order Translation Planes | p. 737 |
Orders 2, 3, 4, 5, 7, 8, 9, 16, 25, 27, 49 | p. 737 |
Order 64 | p. 737 |
Order 81 | p. 739 |
Baer Groups | p. 742 |
The Translation Planes of Order 81 Admitting SL(2, 5) | p. 743 |
The 12-Nest Plane of Prince | p. 744 |
Dual Translation Planes and Their Derivates | p. 745 |
Semi-Translation Planes of Type i | p. 747 |
Semi-Translation Planes of Type 1 | p. 748 |
Affine Planes with Transitive Groups | p. 749 |
Cartesian Group Planes-Coulter-Matthews | p. 751 |
The Planes of Coulter-Matthews | p. 753 |
Planes Admitting PGL(3, q) | p. 755 |
The Hughes Planes | p. 755 |
The Figueroa Planes | p. 756 |
Planes of Order [LessEqual] 25 | p. 757 |
Planes of Order 16 | p. 757 |
Planes of Order 25 | p. 757 |
Real Orthogonal Groups and Lattices | p. 759 |
Aspects of Symplectic and Orthogonal Georaetry | p. 763 |
Bilinear Forms | p. 763 |
Quadratic Forms and Orthogonal Decompositions | p. 766 |
Orthogonal Basis in Characteristic [nonequal] 2 | p. 769 |
Matrix Representations | p. 771 |
Hyperbolic Decomposition | p. 774 |
Quadrics | p. 777 |
Fundamental Results on Groups | p. 781 |
The Classification of Doubly Transitive Groups | p. 781 |
Classification of Primitive Groups of [Delta]L(4, q) | p. 781 |
Theorems on Collineation Groups | p. 782 |
Atlas of Planes and Processes | p. 789 |
Construction Processes | p. 789 |
Known Subregular Spreads | p. 790 |
Known Flag-Transitive Planes | p. 790 |
Flag-Transitive Planes with Spreads in PG(3, q) | p. 791 |
Flag-Transitive Planes of Large Dimension | p. 791 |
Classes of Semifields | p. 792 |
GL(2, q)-Planes of Order q[superscript 3] | p. 792 |
Generalized Andre Planes (and Derived Planes) | p. 793 |
Hyper-Regulus Spreads | p. 793 |
Symplectic Spreads | p. 793 |
Triangle Transitive Planes | p. 794 |
Chains of Reguli | p. 794 |
Nest Planes | p. 797 |
Infinite Classes of Flocks | p. 797 |
Sporadic Flocks of Quadratic Cones | p. 798 |
Semi-Translation Planes of Type 1 | p. 801 |
Sporadic Planes of Order 16 | p. 801 |
Affine Planes of Order 25 | p. 802 |
Non-Translation Planes | p. 802 |
A Short Description-Dimension 2 | p. 802 |
A Short Description-Large Dimension | p. 804 |
Planes Admitting Large Non-Solvable Groups | p. 804 |
Bibliography | p. 807 |
Theorems | p. 849 |
Models | p. 853 |
General Index | p. 857 |
Table of Contents provided by Ingram. All Rights Reserved. |
The New copy of this book will include any supplemental materials advertised. Please check the title of the book to determine if it should include any access cards, study guides, lab manuals, CDs, etc.
The Used, Rental and eBook copies of this book are not guaranteed to include any supplemental materials. Typically, only the book itself is included. This is true even if the title states it includes any access cards, study guides, lab manuals, CDs, etc.
Digital License
You are licensing a digital product for a set duration. Durations are set forth in the product description, with "Lifetime" typically meaning five (5) years of online access and permanent download to a supported device. All licenses are non-transferable.
More details can be found here.