𝔖 Bobbio Scriptorium
✦   LIBER   ✦

On Natural Numbers, Integers, and Rationalsby Frederic B. Fitch

✍ Scribed by Review by: W. Ackermann

Book ID
124958916
Publisher
Association for Symbolic Logic
Year
1950
Tongue
English
Weight
223 KB
Volume
14
Category
Article
ISSN
0022-4812

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πŸ“œ SIMILAR VOLUMES

On Ξ£11 equivalence relations over the na
On Ξ£11 equivalence relations over the natural numbers
✍ Ekaterina B. Fokina; Sy-David Friedman πŸ“‚ Article πŸ“… 2011 πŸ› John Wiley and Sons 🌐 English βš– 155 KB

## Abstract We study the structure of Ξ£^1^~1~ equivalence relations on hyperarithmetical subsets of Ο‰ under reducibilities given by hyperarithmetical or computable functions, called h‐reducibility and FF‐reducibility, respectively. We show that the structure is rich even when one fixes the number o