A Note on Kruskal's Theorem

초록

It is demonstrated that there is a simple, canonical way to show the independency of the Friedman-style miniaturization of Kruskal's theorem with respect to (∏^1_2 - BI)_0. This is done by a non-trivial combination of some well-known, non-trivial previous works concerning directly or indirectly the (proof-theoretic) strength of Kruskal's theorem.

키워드

Kruskal’s theorem; Friedman-style miniaturization; Unprovability; (∏^1_2 - BI)_0; 크루스칼 정리; 프리드먼 방식의 소형화; 증명 불가능성; (∏^1_2 - BI)_0
제목
A Note on Kruskal's Theorem
저자
이계식; 나현숙
발행일
2012-10
저널명
논리연구
권
15
호
3
페이지
307 ~ 321