Sun, 17 Jun 2007 13:39:50 +0200 chaieb moved nonzero_mult_divide_cancel_right to Ring_and_Field as nonzero_mult_divide_cancel_right'; tuned proofs
Sun, 17 Jun 2007 13:39:48 +0200 chaieb Added eta_conv and eta-expansion conversion: waiting for it to be in thm.ML; exported is_refl
Sun, 17 Jun 2007 13:39:45 +0200 chaieb gen_qelim_conv now reduces the universal quatifier to the existential one; Now also deals with Ex f for eta-contracted f;
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