1.

Record Nr.

UNINA9910480778403321

Autore

Kannan V.

Titolo

Ordinal invariants in topology / / V. Kannan

Pubbl/distr/stampa

Providence, Rhode Island : , : American Mathematical Society, , [1981]

©1981

ISBN

1-4704-0652-7

Descrizione fisica

1 online resource (172 p.)

Collana

Memoirs of the American Mathematical Society, , 0065-9266 ; ; number 245

Disciplina

510 s

514/.3

Soggetti

Topological spaces

Invariants

Numbers, Ordinal

Categories (Mathematics)

Electronic books.

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Note generali

Includes index.

Nota di bibliografia

Bibliography: pages 160-161.

Nota di contenuto

""TABLE OF CONTENTS""; ""INTRODUCTION""; ""CHAPTER 1. ORDER OF A MAP""; ""1.1. Definition and Elementary Results""; ""1.2. Quotient Maps with Order â?? 1""; ""1.3. Behavior of the Order of Quotient Maps""; ""1.4. Examples and Exercises""; ""CHAPTER 2. E-ORDER""; ""2.1. Definition and Elementary Properties""; ""2.2. Spaces with E-order â?? 1""; ""2.3. Behavior of E-order""; ""2.4. The Least Upper Bound of E-orders""; ""CHAPTER 3. VIEW FROM CATEGORY THEORY""; ""3.1. The Order of a Closure Space""; ""3.2. The E-order in Terms of Categorical Notions""

""3.3. Order of a Map in Terms of Categorical Notions""""3.4. One-to-One Correspondence Between E-orders and Certain Subcategories of CL""; ""3.5. Canonical Attainment of E-order""; ""CHAPTER 4. MORE ABOUT E-ORDER""; ""4.1. E-order at a Point""; ""4.2. The E-order of a Brush""; ""4.3. What Ordinals Appear as E-order""; ""4.4. E-order and a Chain of Topologies""; ""4.5. What Sets of Ordinals Appear""; ""CHAPTER 5. SPECIAL INSTANCES""; ""5.1. Sequential Order""; ""5.2. k-Order""; ""5.3. m-Net Order""; ""5.4. Some Instances of E-orders""; ""5.5.



Examples""

""CHAPTER 6. SOME INVARIANTS FOR ALL SPACES""""6.1. The Invariant Ï?""; ""6.2. The Invariant Ï?""; ""6.3. The Invariant Î?""; ""6.4. The Invariant r""; ""MISCELLANEOUS EXERCISES""; ""LIST OF TABLES AND DIAGRAMS""; ""APPENDIX""; ""REFERENCES""