1.

Record Nr.

UNINA9910480401403321

Autore

Guralnick Robert M. <1950->

Titolo

Symmetric and alternating groups as monodromy groups of Riemann surfaces I : generic covers and covers with many branch points / / Robert M. Guralnick, John Shareshian ; with an appendix by R. Guralnick and J. Stafford

Pubbl/distr/stampa

Providence, Rhode Island : , : American Mathematical Society, , 2007

©2007

ISBN

1-4704-0490-7

Descrizione fisica

1 online resource (142 p.)

Collana

Memoirs of the American Mathematical Society, , 0065-9266 ; ; Volume 189, Number 886

Disciplina

512.21

Soggetti

Permutation groups

Curves

Monodromy groups

Riemann surfaces

Symmetry groups

Electronic books.

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Note generali

"Volume 189, Number 886 (third of 4 numbers)."

Nota di bibliografia

Includes bibliographical references.

Nota di contenuto

""Contents""; ""Chapter 1. Introduction and statement of main results""; ""1.1. Five or more branch points""; ""1.2. An n-cycle""; ""1.3. Asymptotic behavior of the genus for actions on k-sets""; ""1.4. Galois groups of trinomials""; ""Chapter 2. Notation and basic lemmas""; ""Chapter 3. Examples""; ""Chapter 4. Proving the main results on five or more branch points - Theorems 1.1.1 and 1.1.2""; ""Chapter 5. Actions on 2-sets - the proof of Theorem 4.0.30""; ""Chapter 6. Actions on 3-sets - the proof of Theorem 4.0.31""; ""Chapter 7. Nine or more branch points - the proof of Theorem 4.0.34""

""Chapter 8. Actions on cosets of some 2-homogeneous and 3-homogeneous groups""""Chapter 9. Actions on 3-sets compared to actions on larger sets""; ""Chapter 10. A transposition and an n-cycle""; ""Chapter 11. Asymptotic behavior of g[sub(k)] (E)""; ""Chapter 12. An n-cycle - the proof of Theorem 1.2.1""; ""Chapter 13. Galois groups of



trinomials - the proofs of Propositions 1.4.1 and 1.4.2 and Theorem 1.4.3""; ""Appendix A. Finding small genus examples by computer search""; ""A.1. Description""; ""A.2. n = 5 and n = 6""; ""A.3. 5 â?? r â?? 8, 7 â?? n â?? 20""; ""A.4. r < 5""

""Bibliography""