author | huffman |
Fri, 02 Sep 2011 16:57:51 -0700 | |
changeset 45541 | d1cb7bc44370 |
parent 45540 | 8e6cdb9c00a7 |
child 45542 | 7f0b4515588a |
1.1 --- a/src/HOL/SupInf.thy Fri Sep 02 16:48:30 2011 -0700 1.2 +++ b/src/HOL/SupInf.thy Fri Sep 02 16:57:51 2011 -0700 1.3 @@ -79,7 +79,7 @@ 1.4 lemma Sup_real_iff : (*REAL_SUP_LE in HOL4*) 1.5 fixes z :: real 1.6 shows "X ~= {} ==> (!!x. x \<in> X ==> x \<le> z) ==> (\<exists>x\<in>X. y<x) <-> y < Sup X" 1.7 - by (metis Sup_least Sup_upper linorder_not_le le_less_trans) 1.8 + by (rule iffI, metis less_le_trans Sup_upper, metis Sup_least not_less) 1.9 1.10 lemma Sup_eq: 1.11 fixes a :: real