11b8337a4511b3768q99 butinthissection collatz-problem computerscience dynamicalsystemsandergodictheory ergodictheory folge harmonicanalysis iteration markov-kette noneoftheabove numbertheory polynom polynomials recurrences relationswithnumbertheoryandharmonicanalysis sequences(mathematics) sequencesandsets specialsequencesandpolynomials theoryofcomputing