doc-src/TutorialI/Misc/prime_def.thy
changeset 9458 c613cd06d5cf
parent 8745 13b32661dde4
child 9792 bbefb6ce5cb2
--- a/doc-src/TutorialI/Misc/prime_def.thy	Fri Jul 28 13:04:59 2000 +0200
+++ b/doc-src/TutorialI/Misc/prime_def.thy	Fri Jul 28 16:02:51 2000 +0200
@@ -4,15 +4,15 @@
 (*>*)
 (*<*)term(*>*)
 
-    "prime(p) \\<equiv> 1 < p \\<and> ((m dvd p) \\<longrightarrow> (m=1 \\<or> m=p))";
+    "prime(p) \\<equiv> 1 < p \\<and> (m dvd p \\<longrightarrow> (m=1 \\<or> m=p))";
 text{*\noindent\small
 where \isa{dvd} means ``divides''.
 Isabelle rejects this ``definition'' because of the extra \isa{m} on the
-right-hand side, which would introduce an inconsistency. (Why?) What you
+right-hand side, which would introduce an inconsistency (why?). What you
 should have written is
 *}
 (*<*)term(*>*)
- "prime(p) \\<equiv> 1 < p \\<and> (\\<forall>m. (m dvd p) \\<longrightarrow> (m=1 \\<or> m=p))"
+ "prime(p) \\<equiv> 1 < p \\<and> (\\<forall>m. m dvd p \\<longrightarrow> (m=1 \\<or> m=p))"
 (*<*)
 end
 (*>*)