i = j By: Inst
Thm*f:(AB), as:A List. ||map(f;as)|| = ||as||
[A;|E|;evt;tr_l]
THEN
AllHyps (h.(Unfold `induced_tagged_event_str` h) THEN (Reduce h))
THEN
BackThruSomeHyp
THEN
RWO "map_select" 0
THEN
All (h.(Unfold `event_msg_eq` h) THEN (Reduce h)) Generated subgoals: