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| author |  David Aspinall <da@inf.ed.ac.uk> | 2009-09-15 07:48:10 +0000 |
|---|---|---|
| committer | David Aspinall <da@inf.ed.ac.uk> | 2009-09-15 07:48:10 +0000 |
| commit | 93aff45f52f9bf14f64e5b42ef16aa24d15bd79a (patch) | |
| tree | dcfba599fc18a08596c47ac7ad8845311771b329 /isar/Example.thy | |
| parent | 682b4c17840aaa694cf3c7684bb5b06bcb4108c2 (diff) | |
Revert accidental commit
Diffstat (limited to 'isar/Example.thy')
| -rw-r--r-- | isar/Example.thy | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/isar/Example.thy b/isar/Example.thy index b0640146..720e5480 100644 --- a/isar/Example.thy +++ b/isar/Example.thy @@ -9,10 +9,10 @@ theory Example imports Main begin text {* Proper proof text -- \textit{naive version}. *} -theorem and_comms: "A \<and> B \<longrightarrow> B \<and> A" +theorem and_comms: "A & B --> B & A" proof - assume "A \<and> B" - then show "B \<and> A" + assume "A & B" + then show "B & A" proof assume B and A then show ?thesis .. @@ -22,9 +22,6 @@ qed text {* Unstructured proof script. *} theorem "A & B --> B & A" -by and_comms - - apply (rule impI) apply (erule conjE) apply (rule conjI) |