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thus also $θ$) expanded as a series in $Φ$ necessarily contains an infinite (or zero) number of spatial derivatives [ref] .","intent_p":0.55,"contests_p":0.8},{"arxiv_id":"0812.2872","title":"Light propagation in statistically homogeneous and isotropic dust universes","url":"/paper/0812.2872","section":"The perturbative calculation","sentence":"The effect of backreaction cannot be described merely as a change in the FRW background [ref] , unlike argued in [ref] .","intent_p":0.58,"contests_p":0.75},{"arxiv_id":"0901.4566","title":"Cosmological background solutions and cosmological backreactions","url":"/paper/0901.4566","section":"The perturbative calculation","sentence":"The effect of backreaction cannot be described merely as a change in the FRW background [ref] , unlike argued in [ref] .","intent_p":0.58,"contests_p":0.75},{"arxiv_id":"0907.3377","title":"The influence of structure formation on the cosmic expansion","url":"/paper/0907.3377","section":"The perturbative 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Pith's classifier typed each sentence. A label is shown at intent probability 0.8 or more (0.95 for support), a contest at 0.7 or more. Measured accuracy against two blind model families is at https://pith.science/accuracy. The quoted sentences are the citing authors' own.","held_up":null,"_links":{"html":"https://pith.science/paper/1002.4779"}}