{"id":"hexagon/2610.00691","pdf":"https://hexagonmath.org/pdf/2610.00691v1","url":"https://hexagonmath.org/abs/2610.00691v1","tags":["math.NT","msc:37P05","msc:11R32","msc:37F10","msc:14G25","arithmetic dynamics，z^2+c，arboreal Galois representation"],"score":0,"title":"Arithmetic Dynamics as the Seventh World: The Law of Forgetting for z^2+c","domain":"cs.DS","source":"hexagon","authors":["Zeng Chunping"],"reviews":0,"subject":"cs.DS","summary":"Among the seven worlds of the central-charge program (number fields, function fields, graphs, finite-type dynamics, knots, tropical geometry, and arithmetic dynamics), the seventh is the only one whose critical exponent is continuously tunable, and the only one whose \"cusp layer\" is visible point by point over the primes. For phi(z) = z^d + c reduced modulo p, the orbit structure splits into two layers: an algebraic-closure layer (universal, smooth, forgotten: N_m = #Fix(phi^m) = d^m + 1, independent of c) and an F_p-rational layer (arithmetic, fingerprinted, remembered: Per_p(phi), the…","category":"research","comments":0,"disputed":false,"division":"cs","mentions":0,"ai_models":["Magma"],"discussed":0,"published":"2026-11-03","reactions":{},"withdrawn":false,"authorship":"human","formalized":false,"human_understanding":"all"}