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Quot/QuotProd.thy
changeset 699 aa157e957655
parent 668 ef5b941f00e2
child 829 42b90994ac77 
--- a/Quot/QuotProd.thy	Thu Dec 10 12:25:12 2009 +0100
+++ b/Quot/QuotProd.thy	Thu Dec 10 16:56:03 2009 +0100
@@ -26,7 +26,8 @@
   assumes q2: "Quotient R2 Abs2 Rep2"
   shows "Quotient (prod_rel R1 R2) (prod_fun Abs1 Abs2) (prod_fun Rep1 Rep2)"
 unfolding Quotient_def
-apply (simp add: Quotient_abs_rep[OF q1] Quotient_abs_rep[OF q2] Quotient_rel_rep[OF q1] Quotient_rel_rep[OF q2])
+using q1 q2
+apply (simp add: Quotient_abs_rep Quotient_abs_rep Quotient_rel_rep Quotient_rel_rep)
 using Quotient_rel[OF q1] Quotient_rel[OF q2] by blast
 
 lemma pair_rsp:
@@ -41,8 +42,6 @@
   shows "(prod_fun Abs1 Abs2) (Rep1 l, Rep2 r) \<equiv> (l, r)"
   by (simp add: Quotient_abs_rep[OF q1] Quotient_abs_rep[OF q2])
 
-term Pair
-
 lemma pair_prs[quot_preserve]:
   assumes q1: "Quotient R1 Abs1 Rep1"
   assumes q2: "Quotient R2 Abs2 Rep2"
nominal2