Theorem: LO.FirstOrder.Structure.zero_eq_of_lang (Logic/FirstOrder/Basic/Operator.lean)

State before:
L : Language
M : Type u_1
inst✝³ : Structure L M
inst✝² : L.Zero
inst✝¹ : Zero M
inst✝ : Structure.Zero L M
⊢ func Language.Zero.zero ![] = 0
Tactic:
simpa[Semiterm.Operator.val, Semiterm.Operator.Zero.zero, val_func, ←Matrix.fun_eq_vec₂] using
  Structure.Zero.zero (L := L) (M := M)
State after:
no goals