Sun, 29 May 1994 15:14:28 +0200 nipkow Internale optimization of the simplifier: in case a subterm stays unchanged,
Thu, 26 May 1994 16:53:58 +0200 wenzelm axiomatic type class 'package' for Pure (alpha version);
Thu, 26 May 1994 16:51:46 +0200 wenzelm added "axclass.ML", structure AxClass;
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