Re: [isabelle] how to use brackets in lemma

Dear Martin,

please do not send us an Isabelle theory with no new lines, it is not readable.

Also it is advisable to send a self-containing, working Isabelle theory with only the necessary parts to exhibit your problem. That is also called a minimal example on the Internet.

- Gergely

-----Original Message-----
From: cl-isabelle-users-bounces at [mailto:cl-isabelle-users-bounces at] On Behalf Of M A
Sent: Wednesday, October 29, 2014 5:49 AM
To: isabelle-users at
Subject: [isabelle] how to use brackets in lemma

failed to parse lemma when prove the following would like to see any further usage when continuing adding letters into it lemma mfold5 [simp]:"mfold5 f [a,b,c,d,e] x = f e (f d (f c (f b (f a x))))"
lemma mfold [simp]:"mfold f [a,b,c] x = f c (f b (f a x))"apply(simp_all)apply(auto)donelemma mfoldr [simp]:"mfoldr f [a,b,c] x = f a (f b (f c x))"apply(induct_tac x)apply(auto)donelemma mfoldl [simp]:"mfoldl f x [a,b,c] = f (f (f x a) b) c"apply(induct_tac x)apply(auto)done Regards,

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