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Wittgenstein's Notes on Logic. By Michael Potter

✍ Scribed by Zach Weber


Book ID
111043653
Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
114 KB
Volume
42
Category
Article
ISSN
0026-1068

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πŸ“œ SIMILAR VOLUMES


A note on Grzegorczyk's logic
✍ Emil JeΕ™Γ‘bek πŸ“‚ Article πŸ“… 2004 πŸ› John Wiley and Sons 🌐 English βš– 71 KB

## Abstract Grzegorczyk's modal logic (Grz) corresponds to the class of upwards well‐founded partially ordered Kripke frames, however all known proofs of this fact utilize some form of the Axiom of Choice; G. Boolos asked in [1], whether it is provable in plain ZF. We answer his question negatively