{"id":"e-38dd62b72ba17f45","operation":{"operation":"obreschkoff_combination"},"operation_detail":null,"conclusion_id":"n-c0a8c0f6c6032261","premise_count":2,"theorem":"Hermite--Kakeya--Obreschkoff: real-rooted f, g with interlacing zeros give a zero or real-rooted a f + b g for all real a, b (Obreschkoff 1963; Fisk, Polynomials, roots, and interlacing, Thm 1.43)","lean_route":null,"lean_declarations":[],"certificate_hash":"51a715178c8d757f54c3dac9caa204075556b0cf01e9afdb2074690531d4f674","verification_polytool":"replayed","verification_lean":"not_attempted","certificate_kind":"obreschkoff_combination","certificate_raw_size":8504,"certificate_compressed_size":2218,"conclusion_name":"obreschkoff_combination of Triangle whose (i,j)-th entry is binomial(i,j)*7^(i-j).","claims":[{"claim":"real_rooted","from_index":0,"region":{}}],"premises":[{"position":0,"node_id":"n-f211cb6153c37c6d","role":"sequence","name":"Triangle whose (i,j)-th entry is binomial(i,j)*7^(i-j).","uses":{"claim":"real_rooted","from_index":0,"region":{}},"uses_text":"Every row P_n, n >= 0, is zero or real-rooted with all roots in (-inf, +inf)"},{"position":1,"node_id":"n-f211cb6153c37c6d","role":"sequence","name":"Triangle whose (i,j)-th entry is binomial(i,j)*7^(i-j).","uses":{"claim":"interlacing","from_index":1,"kind":"weak","orientation":"unordered"},"uses_text":"Rows P_(m-1), P_m interlace (weak, unordered) for every m >= 1"}],"cited_by":[{"node_id":"n-c0a8c0f6c6032261","claim":"real_rooted"}]}