
Second-Order Positive Comprehension and Frege’s Basic Law V
LIU Jingxian
Front. Philos. China ›› 2012, Vol. 7 ›› Issue (3) : 367-377.
Second-Order Positive Comprehension and Frege’s Basic Law V
Richard Heck and John Burgess have shown that Frege’s Basic Law V is consistent with predicative comprehension and that the resulting theory interprets Robinson Arithmetic. There are also many other ways to keep Frege from being contradictory. This paper shows that Basic Law V is also consistent with positive comprehension and that the resulting theory also interprets Robinson Arithmetic. In addition, the theory of positive Frege provides a new understanding of Dummett’s “indefinitely extensible concepts.”
predicative comprehension / positive comprehension / Basic Law V
/
〈 |
|
〉 |