{"id":"e-921246387fcf3a1f","operation":{"index_shift":0,"operation":"preserver_image","operator":"{\"shape\":\"affine\",\"slope\":\"1\",\"intercept\":\"-7\"}"},"operation_detail":"affine, shift 0","conclusion_id":"n-2ae85de8aa2f7a20","premise_count":1,"theorem":"a real affine substitution x -> a x + b (a != 0), the reversal x^d p(1/x) (d >= deg p) and a real Mobius map (c x + e)^d p((a x + b)/(c x + e)) (a e - b c != 0, d >= deg p) map real roots to real roots: a root r of p gives the root (r - b)/a, 1/r (and 0) or (e r - b)/(a - c r) (and -e/c); for an input row that is a polynomial the degree condition holds automatically","lean_route":null,"lean_declarations":["Polynomial.Splits.comp_of_degree_le_one"],"certificate_hash":"5eb9a2d5947cb2f0c3f5208eeda4d3d945815394c7dffe4d6bec79ee9e8ba630","verification_polytool":"replayed","verification_lean":"not_attempted","certificate_kind":"preserver_image","certificate_raw_size":19308,"certificate_compressed_size":3775,"conclusion_name":"basis-map coefficients of Riordan array (1+2x,x(1+x)).","claims":[{"claim":"real_rooted","from_index":0,"region":{"lower":{"closed":false,"value":"3"},"upper":{"closed":true,"value":"7"}}},{"claim":"interlacing","from_index":1,"kind":"weak","orientation":"unordered"}],"premises":[{"position":0,"node_id":"n-c27b11147fce8bfa","role":"sequence","name":"Riordan array (1+2x,x(1+x)).","uses":{"claim":"real_rooted","from_index":0,"region":{"lower":{"closed":false,"value":"-4"},"upper":{"closed":true,"value":"0"}}},"uses_text":"Every row P_n, n >= 0, is zero or real-rooted with all roots in (-4, 0]"}],"cited_by":[{"node_id":"n-2ae85de8aa2f7a20","claim":"real_rooted"},{"node_id":"n-2ae85de8aa2f7a20","claim":"one_signed_coefficients"},{"node_id":"n-2ae85de8aa2f7a20","claim":"interlacing"}]}