src/HOL/Analysis/Set_Integral.thy
changeset 67399 eab6ce8368fa
parent 67339 d91b9d22305b
child 67974 3f352a91b45a
equal deleted inserted replaced
67398:5eb932e604a2 67399:eab6ce8368fa
   308   qed fact
   308   qed fact
   309   also have "\<dots> = (LINT x:(A - A \<inter> B)|M. f x) + (LINT x:(B - A \<inter> B)|M. f x)"
   309   also have "\<dots> = (LINT x:(A - A \<inter> B)|M. f x) + (LINT x:(B - A \<inter> B)|M. f x)"
   310     by (auto intro!: set_integral_Un set_integrable_subset[OF f])
   310     by (auto intro!: set_integral_Un set_integrable_subset[OF f])
   311   also have "\<dots> = (LINT x:A|M. f x) + (LINT x:B|M. f x)"
   311   also have "\<dots> = (LINT x:A|M. f x) + (LINT x:B|M. f x)"
   312     using ae
   312     using ae
   313     by (intro arg_cong2[where f="op+"] set_integral_cong_set)
   313     by (intro arg_cong2[where f="(+)"] set_integral_cong_set)
   314        (auto intro!: set_borel_measurable_subset[OF f'])
   314        (auto intro!: set_borel_measurable_subset[OF f'])
   315   finally show ?thesis .
   315   finally show ?thesis .
   316 qed
   316 qed
   317 
   317 
   318 lemma set_integral_finite_Union:
   318 lemma set_integral_finite_Union: