fact: Definition GoToCurrent_T : tRel sigSim 1 := fun tin k => exists tps1 tps2 tp, atCons tin[@Fin0] tps1 tps2 tp /\ GoToCurrent_steps tp <= k.
imports: Undecidability.TM.Basic.Mono Undecidability.TM.Combinators.Combinators Undecidability.TM.Code.Code Undecidability.TM.Single.EncodeTapes Undecidability.TM.Compound(TMTac MoveToSymbol Multi Shift)