In summary (when assuming 0 ≠ d ≠ n {\displaystyle 0\neq d\neq n} ), 1 ≤ t ( d , n ) ≤ t ¯ ( d , n ) ≤ n {\displaystyle 1\leq t(d,n)\leq {\bar {t}}(d,n)\leq n} .
由於態向量必須滿足歸一條件，態向量的範數不能隨時間而變： ⟨ ψ ( t ) | ψ ( t ) ⟩ = ⟨ ψ ( t 0 ) | ψ ( t 0 ) ⟩ {\displaystyle \langle \psi (t)|\psi (t)\rangle =\langle \psi (t_{0})|\psi (t_{0})\rangle } 。