{"paper":{"title":"Certified Collision Exclusion and an Unconditional Upper Bound $\\Lambda<0.156821$ for the de Bruijn--Newman Constant","arxiv_id":"2611.06245","primary_cat":"math.NT","submitted_at":"2026-11-04T09:51:08+00:00","version_compiled":"v1"},"notice":"Every quoted sentence is the authors' text from the arXiv listing abstract. Labels and probabilities are the outputs of classifier-1.13.0 on the question bank abstract-p1-20260923, exactly as returned. 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time-band exclusion, together with uniform remote reality, forces strictness at the proposed endpoint.","hedge":{"p":0.98,"label":"asserted"},"own_p":0.64,"main_claim_p":0.08,"quantitative":false,"quantitative_p":0.05,"role_probabilities":{"gap":0.0,"method":0.01,"result":0.09,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.0,"interpretation":0.9}},{"i":4,"p":0.93,"id":"s4","own":true,"role":"method","text":"The finite certificate uses 664,505 structural Fourier coefficients, 44,182 closed torus boxes, 184 separator moments and 17,385 separator rectangles.","hedge":{"p":1.0,"label":"asserted"},"own_p":0.84,"main_claim_p":0.02,"quantitative":true,"quantitative_p":0.99,"role_probabilities":{"gap":0.0,"method":0.93,"result":0.04,"background":0.0,"limitation":0.0,"future_work":0.0,"contribution":0.03,"interpretation":0.0}},{"i":5,"p":0.46,"id":"s5","own":true,"role":"interpretation","text":"We isolate a Cauchy--Schwarz obstruction intrinsic to the four-prime source 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