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The famous (3n + 1) or Collatz conjecture has admitted some progress over the last several decades towards the conclusion that the conjecture is true (i.e. that all Collatz sequences will eventually reach a value of one), but has stubbornly…

General Mathematics · Mathematics 2021-03-30 Brian Mohan Gurbaxani

In this paper we are shown the following facts: The probability of increased $ A_{k}=P(T^{k} (x_{0})>T^{k-1} (x_{0})) $, and the probability of decrease $B_{k}=P(T^{k} (x_{0})<T^{k-1} (x_{0}))$ in step $ k $ of a Collataz procedure…

Number Theory · Mathematics 2017-07-04 Denis Martínez Tápanes , Jose E. Martínez Serra

Exploring the Collatz Conjecture and changing the expression from 3n + 1 to 5n + 1, we found patterns in different sets of numbers. Some numbers reduce to one (as stated in the Collatz Conjecture), some might escape to infinity, and some…

Number Theory · Mathematics 2023-05-03 Shouvik Ahmed Antu , Raina Shrimali , Miranda Jones

The Collatz hypothesis is a theorem of the algorithmic theory of natural numbers. We prove the (algorithmic) formula that expresses the halting property of Collatz algorithm. The observation that Collatz's theorem cannot be proved in any…

General Mathematics · Mathematics 2026-03-03 Grażyna Mirkowska , Andrzej Salwicki

In this paper, we will introduce an extension to the Collatz's conjecture. This conjecture may be seen as a general conjecture that unifies the Collatz one together with many other similar conjectures. For instance, we propose our new…

General Mathematics · Mathematics 2026-01-13 Abderrahman Bouhamidi

The 3x+ 1 problem concerns iteration of the map on the integers given by T(n) = (3n+1)/2 if n is odd; T(n) = n/2 if n is even. The 3x+1 Conjecture asserts that for every positive integer n > 1 the forward orbit of n under iteration by T…

Number Theory · Mathematics 2011-01-12 Jeffrey C. Lagarias

The Collatz conjecture implies that an iterated function sequence under a certain linear operator, beginning with a certain complex valued function, must converge to a certain complex function.

General Mathematics · Mathematics 2025-08-19 Kerry M. Soileau

On the set of positive integers, we consider the iterative process that maps $n$ to either $\frac{3n+1}{2}$ or $\frac{n}{2}$ depending on the parity of $n$. The Collatz conjecture states that all such sequences eventually enter the trivial…

General Mathematics · Mathematics 2026-05-19 Olivier Rozier , Claude Terracol

In this article we present set of infinite natural numbers which satisfies the conjecture $3n+1$.

General Mathematics · Mathematics 2016-08-05 G. H. S. Costa , A. C. Souza Filho

We represent the generalized Collatz function with the recursive ruler function r(2n) = r(n) + 1 and r(2n + 1) = 1. We generate even-only and odd-only Collatz subsequences that contain significantly fewer elements term by term, to 2 and 1,…

General Mathematics · Mathematics 2021-12-15 Robert Hill Nichols

In this article, we define a very important sequence of functions, all the functions of this sequence present behaviors very close to that of the Collatz function. The study of such functions allows us to obtain very interesting results…

General Mathematics · Mathematics 2021-07-13 Raouf Rajab

The Collatz problem is one of many names (the Collatz Problem, the Syracuse Problem, the Hailstone Problem, the 3x+1 problem). Most commonly, however, the problem goes by either the 3x+1 problem or the Collatz problem. In addition to having…

Dynamical Systems · Mathematics 2017-05-04 Denver Stahl

In this research, an optimal algorithm for the Collatz conjecture is presented. Properties such as the convergence of the algorithm and an equation that relates the algorithm to the classical Collatz conjecture are obtained. It is validated…

General Mathematics · Mathematics 2024-07-23 Juan Carlos Riano-Rojas

An attempt to come closer to a resolution of the Collatz conjecture is presented. The central idea is the formation of a tree consisting of positive odd numbers with number 1 as root. Functions for generating the tree from the root are…

Number Theory · Mathematics 2018-08-20 Kerstin Andersson

In this work, we introduce another extension U of the 3n+1 function to the real line. We propose a conjecture about the U-trajectories that generalizes the famous 3n+1 (or Collatz) conjecture. We then prove our main result about the…

Dynamical Systems · Mathematics 2007-05-23 Pavlos B. Konstadinidis

In this paper, we first prove that given a nonnegative integer $m$ and an odd number $t$ not divisible by $3$, there exists a unique Collatz's Sequence \[ S_{c}(m,t)=\{n_{0}(m,t),n_{1}(m,t),n_{2}(m,t),\ldots,n_{m}(m,t),n_{m+1}(m,t)\} \]…

General Mathematics · Mathematics 2026-01-13 Shan-Guang Tan

We propose a stochastic version of the Collatz $3x + 1$ Problem.

Probability · Mathematics 2015-03-13 Aristides V. Doumas , Vassilis G. Papanicolaou

The document tries to put focus on sequences with certain properties and periods leading to the first value smaller than the starting value in the Collatz problem. With the idea that, if all starting numbers lead ultimately to a smaller…

General Mathematics · Mathematics 2025-02-14 J. Stöckl

The scope of the present work is to explain why it is true that all N have a distinct position in The Collatz Tree (The Collatz Graph)

General Mathematics · Mathematics 2025-09-03 R. Bruun

We describe a new algorithm for verifying the Collatz conjecture for all n < 2^N for some fixed N. The algorithm takes less than twice as long to verify convergence for all n < 2^{N+1} as it does to verify convergence for all n < 2^N. We…

Number Theory · Mathematics 2026-02-12 Vigleik Angeltveit