equal
deleted
inserted
replaced
1363 proof - |
1363 proof - |
1364 interpret finite_product_sigma_finite M \<mu> "{}" by default (fact finite.emptyI) |
1364 interpret finite_product_sigma_finite M \<mu> "{}" by default (fact finite.emptyI) |
1365 have "\<And>A. measure (Pi\<^isub>E {} A) = 1" |
1365 have "\<And>A. measure (Pi\<^isub>E {} A) = 1" |
1366 using assms by (subst measure_times) auto |
1366 using assms by (subst measure_times) auto |
1367 then show ?thesis |
1367 then show ?thesis |
1368 unfolding positive_integral_alt simple_function_def simple_integral_def_raw |
1368 unfolding positive_integral_def simple_function_def simple_integral_def_raw |
1369 proof (simp add: P_empty, intro antisym) |
1369 proof (simp add: P_empty, intro antisym) |
1370 show "f (\<lambda>k. undefined) \<le> (SUP f:{g. g \<le> f}. f (\<lambda>k. undefined))" |
1370 show "f (\<lambda>k. undefined) \<le> (SUP f:{g. g \<le> f}. f (\<lambda>k. undefined))" |
1371 by (intro le_SUPI) auto |
1371 by (intro le_SUPI) auto |
1372 show "(SUP f:{g. g \<le> f}. f (\<lambda>k. undefined)) \<le> f (\<lambda>k. undefined)" |
1372 show "(SUP f:{g. g \<le> f}. f (\<lambda>k. undefined)) \<le> f (\<lambda>k. undefined)" |
1373 by (intro SUP_leI) (auto simp: le_fun_def) |
1373 by (intro SUP_leI) (auto simp: le_fun_def) |