Level: Lib Thy Top:
Hypotheses:

None

Conclusion:

T:. eq:{T}. x:T. L,M:T List. x(eq) (L @ M) x(eq) L x(eq) M

Applied Tactic: UnivCD THENA Auto
Generated subgoals:

1. x(eq) (L @ M) x(eq) L x(eq) M