Thu, 03 Apr 2014 17:26:45 +0100 paulson Merge
Thu, 03 Apr 2014 17:26:04 +0100 paulson Cleaned up some messy proofs
Thu, 03 Apr 2014 18:24:08 +0200 hoelzl fix #0556204bc230
Thu, 03 Apr 2014 17:56:08 +0200 hoelzl merged DERIV_intros, has_derivative_intros into derivative_intros
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