Combinatorics '86: proceedings of the International Conference on Incidence Geometries and Combinatorial Structures ; Passo della Mendola, Trento, Italy, 30 June - 5 July, 1986
Saved in:
| Format: | Conference Proceeding Book |
|---|---|
| Language: | English |
| Published: |
Amsterdam [u.a.]
North-Holland
1988
|
| Series: | Annals of discrete mathematics
37 |
| Subjects: | |
| Online Access: | Inhaltsverzeichnis |
| Physical Description: | XVI, 502 S. graph. Darst. |
| ISBN: | 0444703691 |
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| 245 | 1 | 0 | |a Combinatorics '86 |b proceedings of the International Conference on Incidence Geometries and Combinatorial Structures ; Passo della Mendola, Trento, Italy, 30 June - 5 July, 1986 |c ed. by A. Barlotti ... |
| 246 | 1 | 3 | |a Combinatorics eighty-six |
| 264 | 1 | |a Amsterdam [u.a.] |b North-Holland |c 1988 | |
| 300 | |a XVI, 502 S. |b graph. Darst. | ||
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Record in the Search Index
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| adam_text | ix
CONTENTS
Foreword v
Opening Welcome
G. Tallini vii
Participants xiii
Net of Rationality in a Minkowski Plane
R. Artzy 1
A New Class of Translation Planes
R.D. Baker and G.L. Ebert 7
Quasigroups and Groups Arising from Cubic Surfaces
L. Beneteau 21
Blocking Sets in the Large Mathieu Designs, I: The Case
S(3,6,22)
L. Berardi 31
Blocking Sets in the Projective Plane of Order Four
L. Berardi and F. Eugeni 43
Kalahari and the Sequence Sloane No. 377
D. Betten 51
Enciphered Geometry. Some Applications of Geometry to Cryptography
A. Beutelspacher 59
On Finite Grassmann Spaces
P. Biondi 69
The Regular Subgroups of the Sharply 3 Transitive Finite Permu¬
tation Groups
A. Bonisoli 75
Hyperovals in Desarguesian Planes of Even Order
W. Cherowitzo 87
Circular Block Designs from Planar Near Rings
J.R. Clay 95
Extending the Concept of Decomposability for Triple Systems
C.J. Colbourn, E. Mendelsohn, and A. Rosa 107
Translation Partial Geometries
F. De Clerck, H. Gevaert, and J.A. Thas 117
On Admissible Sets with Two Intersection Numbers in a
Projective Plane
M.J. De Resmini 137
x Contents
Commutative Finite A Hypergroups of Length Two
M. De Salvo 147
On Sets of Fixed Parity in Steiner Systems
F. Eugeni and S. Innamorati 57
Blocking Sets of Index Two
F. Eugeni and E. Mayer 169
A Short Proof that Ordered Linear Spaces are Locally Projective
R. Frank 177
Midpoints and Midlines in a Finite Hyperbolic Plane
C.W.L. Garner 181
Hall Ryser Type Theorems for Relative Difference Sets
D. Ghinelli Smit 189
Coordination of Generalized Quadrangles
G. Hanssens and H. Van Maldeghem 195
Construction of Some Planar Translation Spaces
A. Herzer 209
Regular Sets in Geometries
J.D. Key 217
Group Preserving Extensions of Skew Parabola Planes
N. Knarr 225
Products of Involutions in Orthogonal Groups
F. Knuppel 231
Examples of Ovoidal Mobius Planes of Hering Class 111
H. J. Kroll 249
A Construction of Pairs and Triples of k Incomplete Orthogonal Arrays
P. Lancellotti and C. Pellegrino 251
Relative Infinity in Projective De Sitter Spacetime and Its
Relation to Proper Time
J.A. Lester 257
Affine Hjelmslev Rings and Planes
J.W. Lorimer 265
Irreducible Representations of Hecke Algebras of Rank 2 Geometries
S. Lowe 277
A Characterization of Pappian Affine Hjelmslev Planes
H. Maurer and W. Nolte 281
Embedding Locally Projective Planar Spaces into Projective Spaces
K. Metsch 293
On Topological Incidence Groupoids
R. Meyer, J. Misfeld, and E. Zizioli 297
Isomorphisms of Finite Hypergroupoids
R. Migliorato 301
Contents xi
Seminversive Planes
D. Olanda 311
Geometric and Algebraic Methods in the Classification of Geometries
Belonging to Lie Diagrams
A. Pasini 315
The Thas Fisher Generalized Quadrangles
S.E. Payne 357
On Group Spaces Defined by Semidirect Products of Groups
J. Pfalzgraf 367
On Permutation Properties for Finitely Generated Semigroups
G. Pirillo 375
On fc Sets of Type (O,m,n) in S with Three Exterior Hyperplanes
R. Procesi Ciampi and R. Rota r ^ 377
An Algorithm for L colourations
L. Puccio S 385
A Blocking Set in PG(3,q), q _ 5
S. Rajola 391
A Characterization of all Abelian Groups whose Lattice of Precompact
Group Topologies Represents a Projective Geometry
D. Remus 395
Groups of Homologies in 4 Dimensional Stable Planes are Classical
H. P. Seidel 399
Polynomial Species and Connections among Bases of the Symmetric
Polynomials
D. Senato and A.M. Venezia 405
Set and Sequence Closure for Finite Permutation Groups
J. Siemons 413
P Cyclic Hypergroups with Three Characteristic Elements
S.H. Spartalis and T.N. Vougiouklis 421
Order and Uniform Structure in Projective Geometry
H. Szambien 427
On Blocking Sets in Finite Projective and Affine Spaces
G. Tallini 433
Symmetric Designs without Ovals and Extremal Self Dual Codes
V.D. ToncheV 451
Groups in Hypergroups
T. Vougiouklis 459
The Perron Frobenius Projection in the Theory of Graphs, Digraphs,
Designs and Stochastic Processes
K.E. Wolff 469
On the Non Existence of Certain Difference Sets
N. Zagaglia Salvi 479
xii Contents
On Complete 12 Arcs in Protective Planes of Order 12
C. Zanella 485
Block Designs Admitting Flag Transitive Groups of Automorphisms
P. H. Zieschang 493
An Independence Theorem on the Conditions for Incidence Loops
E. Zizioli 497
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| discipline | Mathematik |
| format | Conference Proceeding Book |
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| spelling | Combinatorics '86 proceedings of the International Conference on Incidence Geometries and Combinatorial Structures ; Passo della Mendola, Trento, Italy, 30 June - 5 July, 1986 ed. by A. Barlotti ... Combinatorics eighty-six Amsterdam [u.a.] North-Holland 1988 XVI, 502 S. graph. Darst. txt rdacontent n rdamedia nc rdacarrier Annals of discrete mathematics 37 combinatoire inriac géométrie combinatoire inriac structure algébrique inriac structure combinatoire inriac théorie codage inriac théorie graphe inriac Combinatorial geometry Congresses Kombinatorische Geometrie (DE-588)4140733-7 gnd rswk-swf Kombinatorik (DE-588)4031824-2 gnd rswk-swf (DE-588)1071861417 Konferenzschrift 1986 Mendel gnd-content Kombinatorik (DE-588)4031824-2 s DE-604 Kombinatorische Geometrie (DE-588)4140733-7 s Barlotti, Adriano 1923-2008 Sonstige (DE-588)128480807 oth International Conference on Incidence Geometries and Combinational Structures 1986 Mendelpaß Sonstige (DE-588)16121098-3 oth Annals of discrete mathematics 37 (DE-604)BV004511910 37 HBZ Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=003806904&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Combinatorics '86 proceedings of the International Conference on Incidence Geometries and Combinatorial Structures ; Passo della Mendola, Trento, Italy, 30 June - 5 July, 1986 Annals of discrete mathematics combinatoire inriac géométrie combinatoire inriac structure algébrique inriac structure combinatoire inriac théorie codage inriac théorie graphe inriac Combinatorial geometry Congresses Kombinatorische Geometrie (DE-588)4140733-7 gnd Kombinatorik (DE-588)4031824-2 gnd |
| subject_GND | (DE-588)4140733-7 (DE-588)4031824-2 (DE-588)1071861417 |
| title | Combinatorics '86 proceedings of the International Conference on Incidence Geometries and Combinatorial Structures ; Passo della Mendola, Trento, Italy, 30 June - 5 July, 1986 |
| title_alt | Combinatorics eighty-six |
| title_auth | Combinatorics '86 proceedings of the International Conference on Incidence Geometries and Combinatorial Structures ; Passo della Mendola, Trento, Italy, 30 June - 5 July, 1986 |
| title_exact_search | Combinatorics '86 proceedings of the International Conference on Incidence Geometries and Combinatorial Structures ; Passo della Mendola, Trento, Italy, 30 June - 5 July, 1986 |
| title_full | Combinatorics '86 proceedings of the International Conference on Incidence Geometries and Combinatorial Structures ; Passo della Mendola, Trento, Italy, 30 June - 5 July, 1986 ed. by A. Barlotti ... |
| title_fullStr | Combinatorics '86 proceedings of the International Conference on Incidence Geometries and Combinatorial Structures ; Passo della Mendola, Trento, Italy, 30 June - 5 July, 1986 ed. by A. Barlotti ... |
| title_full_unstemmed | Combinatorics '86 proceedings of the International Conference on Incidence Geometries and Combinatorial Structures ; Passo della Mendola, Trento, Italy, 30 June - 5 July, 1986 ed. by A. Barlotti ... |
| title_short | Combinatorics '86 |
| title_sort | combinatorics 86 proceedings of the international conference on incidence geometries and combinatorial structures passo della mendola trento italy 30 june 5 july 1986 |
| title_sub | proceedings of the International Conference on Incidence Geometries and Combinatorial Structures ; Passo della Mendola, Trento, Italy, 30 June - 5 July, 1986 |
| topic | combinatoire inriac géométrie combinatoire inriac structure algébrique inriac structure combinatoire inriac théorie codage inriac théorie graphe inriac Combinatorial geometry Congresses Kombinatorische Geometrie (DE-588)4140733-7 gnd Kombinatorik (DE-588)4031824-2 gnd |
| topic_facet | combinatoire géométrie combinatoire structure algébrique structure combinatoire théorie codage théorie graphe Combinatorial geometry Congresses Kombinatorische Geometrie Kombinatorik Konferenzschrift 1986 Mendel |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=003806904&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
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