A space is regular if and only if its Kolmogorov quotient is T3; and, as mentioned, a space is T3 if and only if it's both regular and T0.
一个空间是正则的，当且仅当它的柯爾莫果洛夫商是 T3 的；并且如上所述，一个空间是 T3 的，当且仅当它是正则的和 T0 的二者。