 |
HAL UPEC - UPEM Portal |  |
 |
Journal articles
The Wadge-Wagner hierarchy of omega-rational sets
Abstract : We present a unified treatment of the hierarchy defined, by Klaus Wagner for omega-rational sets and also introduced in the more general framework of descriptive set theory by William W. Wadge. We show that this hierarchy can be defined by syntactic invariants, using the concept of an omega-semigroup.
https://hal-upec-upem.archives-ouvertes.fr/hal-00693993
Contributor : Dominique Perrin Connect in order to contact the contributor
Submitted on : Thursday, May 3, 2012 - 11:46:59 AM
Last modification on : Tuesday, October 19, 2021 - 11:26:19 AM
Contributor : Dominique Perrin Connect in order to contact the contributor
Submitted on : Thursday, May 3, 2012 - 11:46:59 AM
Last modification on : Tuesday, October 19, 2021 - 11:26:19 AM