Wed, 28 Feb 2018 17:05:34 +0100 immler merged
Wed, 28 Feb 2018 15:53:05 +0100 immler generalized lemmas about orthogonal transformation
Wed, 28 Feb 2018 16:30:25 +0100 wenzelm more explicit infixl (see initial 1edf0f223c6e);
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