Cyclic Neofields and Combinatorial Designs

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824 D. Frank Hsu

Cyclic Neofields and Combinatorial Designs

Springer-Verlag Berlin Heidelberg New York 1980

Author D. Frank Hsu Department of Mathematics Fordham University Bronx, NY 10458 USA

AMS Subject Classifications (1980): 05 B05, 05 B 10, 05 B 20, 05 C 20, 12-02, 12K99 ISBN 3-540-10243-4 Springer-Verlag Berlin Heidelberg New York ISBN 0-38?-10243-4 Springer-Verlag New York Heidelberg Berlin This work is subject to copyright. All rights are reserved, whether the whole or part of the material is concerned, specifically those of translation, reprinting, re-use of illustrations, broadcasting, reproduction by photocopying machine or similar means, and storage in data banks. Under § 54 of the German Copyright Law where copies are made for other than private use, a fee is payable to the publisher, the amount of the fee to be determined by agreement with the publisher. © by Springer-Verlag Berlin Heidelberg 1980 Printed in Germany Printing and binding: Beltz Offsetdruck, Hemsbach/Bergstr. 2141/3140-543210

Preface The aim of this m o n o g r a p h of the s t r u c t u r e their made

theory

applications

of cyclic

to various

to keep this m o n o g r a p h A glance

little

necessary

and g e n e r a l There other

at the Table

associativity

written

prerequisite

course

Examples absorb

a

are given

the theory

for the material,

in a l g e b r a

covering

acquaintance

at the U n i v e r s i t y

of P r o f e s s o r

with

non-

combinatorics

Thanks

David W i n t e r

Thomas

are taken

from my

of M i c h i g a n

under

F. Storer.

me to the w o n d e r f u l

and c o m b i n a t o r i c s ,

monograph

been

as possible.

will reveal

contains.

of this m o n o g r a p h

him for i n t r o d u c i n g

advice.

has

theory.

supervision

theory

An attempt

the r e a d e r s

and a m i n i m a l

Some parts thesis

and to show

constructions.

a graduate

and n u m b e r

areas.

of Contents

to help

is no formal

than

neofields

an account

as s e l f - c o n t a i n e d

of what the m o n o g r a p h

Wherever

is to present

I w i s h to thank

world

of cyclotomy

and for his e n c o u r a g e m e n t

are also due to P r o f e s s o r s

and Katta Murty

and m a d e

the

a number

who read of useful

Donald

and

J. Lewis,

an early draft suggestions.

of this

TABLE

Preface Table

of

OF

CONTENTS

.............................................. contents

Introduction

...................................

ii iii

..........................................

I

CHAPTER I.

Ii.

Ill.

ADDITIVE

STRUCTURE

i.

Preliminary

2.

XMP-

3.

XIP-admissible

TYPE

a)

and

Additive

2.

Non-existence

3.

Construction

Construction

in

Theorems

of

of

Zv_ I

.........

6

.........

6

of

Z

... V-!

..........

..........................

Structure

OF T Y P E

Results

Partitions

Partitions

of

NEOFIELDS

and

LXP-admissible

XIP-NEOFIELDS

CONSTRUCTION

CYCLIC

Definitions

i.

i.

IN

Type b)

a)

SlP-ne~fie!ds and

the

iii)

Constructions

XIP-neofields

XIP-NEOFIELDS

Even

Order

.