Re: [isabelle] interpretations and *** exception Option raised



Hi David,

this looks like a bug.  Which precise version of Isabelle are you using?

Clemens


On 10 Sep 2008, at 0:12, David Streader wrote:

I am lost as to what is wrong! The last lemma (see below or attached for simplified theory) results in error:
*** exception Option raised
*** At command "lemma".






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