Wed, 26 Apr 2017 15:57:16 +0100 paulson Merge
Wed, 26 Apr 2017 15:53:35 +0100 paulson Further new material. The simprule status of some exp and ln identities was reverted.
Wed, 26 Apr 2017 17:01:10 +0200 eberlm tuned Approximation: separated general material from oracle
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