Coq-BB5
Coq-BB5 is a Rocq (previously known as Coq) proof that BB(5) = 47,176,870. It combines many deciders and individual TM proofs that the bbchallenge.org community developed and described over the years 2022-2024. It is maintained by mxdys and includes a snapshot of BusyCoq maintained by meithecatte.
The individual TM proofs are - except for Skelet 17 - all contained within the included snapshot of BusyCoq. TMs which have individual proofs in BusyCoq are: The "finned" machines (#1, #2, #3, #4, #5) and Skelet machines 1, 10, 15, 26, 33, 34 and 35.[1] The individual proof for non-halting of Skelet 17 is contained within Coq-BB5 itself.[2]
See: https://github.com/ccz181078/Coq-BB5/tree/main
TODO: Give wiki links to these deciders and individual TM proofs.