Wed, 19 Mar 2014 21:59:31 +0100 wenzelm tuned proofs;
Wed, 19 Mar 2014 18:47:22 +0100 haftmann elongated INFI and SUPR, to reduced risk of confusing theorems names in the future while still being consistent with INTER and UNION
Wed, 19 Mar 2014 17:06:02 +0000 paulson Some rationalisation of basic lemmas
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