Media type: E-Article Title: Achilles and the Tortoise Climbing Up the Arithmetical Hierarchy Contributor: Asarin, Eugene; Maler, Oded Published: Elsevier BV, 1998 Published in: Journal of Computer and System Sciences, 57 (1998) 3, Seite 389-398 Language: English DOI: 10.1006/jcss.1998.1601 ISSN: 0022-0000 Keywords: Applied Mathematics ; Computational Theory and Mathematics ; Computer Networks and Communications ; Theoretical Computer Science Origination: Footnote: Access State: Open Access