Kernel-Checked Frontier Certificates for Erd\H{o}s Problem 414
Let $h(n) = n + \tau(n)$, where $\tau$ counts divisors. Erd\H{o}s and Graham asked, after Spiro, whether the orbits of any two positive integers under $h$ eventually share a point (Problem 414 on Bloom's list). The problem is open, and a finite computation cannot close it; nothing about it has been checked by a proof k...