Mon, 02 Oct 2006 18:30:10 +0200 | huffman | add lemmas norm_not_less_zero, norm_le_zero_iff | changeset | files |
Mon, 02 Oct 2006 17:33:13 +0200 | paulson | added is_Trueprop | changeset | files |
Mon, 02 Oct 2006 17:32:18 +0200 | paulson | tidying and simplifying | changeset | files |