Mon, 15 Aug 1994 18:09:37 +0200 lcp ZF/Sum/Sigma_bool: new
Mon, 15 Aug 1994 18:07:03 +0200 lcp ZF/equalities/Sigma_cons: new
Mon, 15 Aug 1994 18:04:10 +0200 lcp ZF/func/empty_fun: renamed from fun_empty
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