How to Order

For AMS eBook frontlist subscriptions or backfile collection purchases:

   1a. To purchase any ebook backfile or to subscibe to the current year of Contemporary Mathematics, please download this required license agreement,

   1b. To subscribe to the current year of Memoirs of the AMS, please download this required license agreement.

   2. Complete and sign the license agreement.

   3. Email, fax, or send via postal mail to:

Customer Services
American Mathematical Society
201 Charles Street Providence, RI 02904-2213  USA
Phone: 1-800-321-4AMS (4267)
Fax: 1-401-455-4046

Visit the AMS Bookstore for individual volume purchases.

Browse the current eBook Collections price list

Powered by MathJax
  Remote Access

Degree theory for equivariant maps, the general $S^1$-action

About this Title

Jorge Ize, Ivar Massabò and Alfonso Vignoli

Publication: Memoirs of the American Mathematical Society
Publication Year 1992: Volume 100, Number 481
ISBNs: 978-0-8218-2542-6 (print); 978-1-4704-0058-3 (online)
MathSciNet review: 1126179
MSC: Primary 58E09; Secondary 34C25, 47H11, 58F22

View full volume PDF

Read more about this volume

View other years and numbers:

Table of Contents


  • 1. Preliminaries
  • 2. Extensions of $S^1$-maps
  • 3. Homotopy groups of $S^1$-maps
  • 4. Degree of $S^1$-maps
  • 5. $S^1$-index of an isolated non-stationary orbit and applications
  • 6. Index of an isolated orbit of stationary solutions and applications
  • 7. Virtual periods and orbit index
  • Appendix. Additivity up to one suspension
American Mathematical Society