12⁢πn/2⁢∫-∞,∞nΔ⁡t1,…,tn2⁢c⁢∏k=1nexp⁡-12⁢tk2⁢ⅆ⁡tk=∏k=1nΓ⁡1+k⁢cΓ⁡1+cn,