A convergence proposal for the Collatz sequence: the personalised conjecture

An alternative conjecture to the classic formulation of the Collatz sequence is proposed based on the analysis of the ratio between even and odd steps. It is demonstrated that, except for exceptional cases, in each iteration (understood as a set of odd and even steps dependent on the initial number of the same iteration), the total number of even steps ( b ) exceeds that of the odd steps ( a ) by at least one or two units, leading after a certain number of iterations to the inequality 3𝑎⋅𝑁2𝑏<1 , which implies the convergence of the sequence towards 1. In fact, below, my personalised Collatz conjecture will be applied in a faster way, considering only natural numbers N modulo 4 and that the sequence of these numbers (after an initial number that can also be even mod. 4) is reduced to the sequence of only odd numbers ≡ 1 mod. 4 and ≡ 3 mod. 4. This approach leads to the same results as the canonical Collatz sequence.

Publication Details

Journal
Zenodo (CERN European Organization for Nuclear Research)
Published
2025-09-16
DOI
https://doi.org/10.5281/zenodo.17257919
Primary Topic
Economic and Technological Innovation
Type
article
Field-Weighted Citation Impact
0.00
Controls
|||
ALL TIME
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
article

A convergence proposal for the Collatz sequence: the personalised conjecture

Zenodo (CERN European Organization for Nuclear Research)
Economic and Technological Innovation
article

A convergence proposal for the Collatz sequence: the personalised conjecture

article en

Abstract

An alternative conjecture to the classic formulation of the Collatz sequence is proposed based on the analysis of the ratio between even and odd steps. It is demonstrated that, except for exceptional cases, in each iteration (understood as a set of odd and even steps dependent on the initial number of the same iteration), the total number of even steps ( b ) exceeds that of the odd steps ( a ) by at least one or two units, leading after a certain number of iterations to the inequality 3𝑎⋅𝑁2𝑏<1 , which implies the convergence of the sequence towards 1. In fact, below, my personalised Collatz conjecture will be applied in a faster way, considering only natural numbers N modulo 4 and that the sequence of these numbers (after an initial number that can also be even mod. 4) is reduced to the sequence of only odd numbers ≡ 1 mod. 4 and ≡ 3 mod. 4. This approach leads to the same results as the canonical Collatz sequence.

Zenodo (CERN European Organization for Nuclear Research)
Reduced inequalities
Openalex Percentile: Top 33%
Economic and Technological Innovation
AI Navigator

Ask Laika to Summarize, Analyze, and Connect papers live on the map.

Summarize Papers & Methodologies

Extract key findings, datasets, and comparative methods across publications.

Benchmark Rankings & Visual Analytics

Rank top research institutions, authors, funders, topics, and journals by Field-Weighted Citation Impact (FWCI) and paper volume with instant charts.

Connect Distant Disciplines

Bridge topological clusters on the map to find hidden collaborative intersections.