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feat(measure_theory/bochner_integration): connecting the Bochner inte…
…gral with the integral on `ennreal`-valued functions (#1790) * shorter proof * feat(measure_theory/bochner_integration): connecting the Bochner integral with the integral on `ennreal` This PR proves that `∫ f = ∫ f⁺ - ∫ f⁻`, with the first integral sign being the Bochner integral of a real-valued function `f : α → ℝ`, and second and third integral sign being the integral on `ennreal`-valued functions. See `integral_eq_lintegral_max_sub_lintegral_min`. I feel that most of the basic properties of the Bochner integral are proved. Please let me know if you think something else is needed. * various things : * add guides for typeclass inference; * add `norm_cast` tags; * prove some corollaries; * add doc strings; * other fixes * Update bochner_integration.lean * add some doc strings * Fix doc strings * Update bochner_integration.lean * Update bochner_integration.lean * fix doc strings * Update bochner_integration.lean * Use dot notation * use dot notation * Update Meas.lean
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