When using google to find out about research results about the Collatz conjecture, I find numerous proofs by various people who seem to be experts of the topic and an abundance of proofs by amateurs. Here are 3 examples of such proofs, where at least the first two appear to be scientists with experience in relevant fields:
- Complete Proof of the Collatz Conjecture, Farzali Izadi (maybe this is Farzali Izadi's linkedin profile)
- Solution to Collatz's Conjecture, Jose William Porras
- The Visual Pattern in the Collatz Conjecture and Proof of No Non-Trivial Cycles, Fabian S. Reid
Wikipedia states that the conjecture is not proved, while for example Porras' proof is from 2018. I'm sure this proof has been checked and either considered correct or incorrect/incomplete, but I couldn't find anything substantial about checks of these proofs.
How to know what the current status is about the research here? Do I have to check all of those proofs on my own to know if one of them is correct?