Literature request: Papers by Charles C. Cadogan.

Question

I am looking for three papers on the Collatz Conjecture by Charles C. Cadogan. The Annotated Bibliography II (Lagarias) lists these three as:

"Charles C. Cadogan (2000), The 3x+ 1 problem: towards a solution, Caribbean J. Math. Comput. Sci. 10 (2000), paper 2, 11pp. (MR 2005g:11032)"

"Charles C. Cadogan (2003), Trajectories in the 3x+1 problem, J. of Combinatorial Mathematics and Combinatorial Computing, 44 (2003), 177–187. (MR 2004a:11017)"

"Charles C. Cadogan (2006), A Solution to the 3x+1 Problem, Caribbean J. Math. Comp. Sci. 13 (2006), 1–11."

I have searched on google and have found nothing. Can anyone help?

Answer 1

Apparently it is possible to request The 3x+1 problem: towards a solution to the author here: https://www.researchgate.net/publication/268028676_The_3x1_problem_towards_a_solution

EDIT: Unfortunately this mathematician died in 2015 : UWI Mourns the Passing of Renowned Mathematician, Professor Emeritus Charles Cadogan

Answer 2

Here two of these articles, and two others older:

• Charles C. Cadogan (1991), Some Observations on the 3x + 1 Problem
• Charles C. Cadogan (1996), Exploring the 3x+1 Problem 1
• Charles C. Cadogan (2000), The 3x + 1 Problem: Towards a Solution
• Charles C. Cadogan (2006), A Solution to the 3x+1 Problem

Lagarias in "The 3x + 1 Problem: An Annotated Bibliography, II (2000-2009)" p.2 mentions that "The proofs claimed in […] Cadogan (2006) [… is] incomplete." An error p.7 invalidates the following and the assert of proof of the conjecture.

Note also that these several papers contain almost the same materials.