[Merged by Bors] - chore(probability/kernel/composition): redefine kernel.comp using measure.bind, remove kernel.map_measure #19160
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…sure.bind, remove kernel.map_measure (#19160) We replace the definition of `kernel.comp` with a new one using `measure.bind`: it removes the need for `is_s_finite_kernel` hypotheses in the definition and most lemmas. When the kernels are s-finite, the new definition coincides with the old one. We remove `kernel.map_measure` because it is exactly the same as `measure.bind` applied to a kernel. Co-authored-by: RemyDegenne <remydegenne@gmail.com>
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We replace the definition of
kernel.compwith a new one usingmeasure.bind: it removes the need foris_s_finite_kernelhypotheses in the definition and most lemmas. When the kernels are s-finite, the new definition coincides with the old one.We remove
kernel.map_measurebecause it is exactly the same asmeasure.bindapplied to a kernel.