一类含梯度项的奇异抛物方程在文中得到了讨论。在某些特定条件下,通过抛物正则化方法及上下解方法,作者获得该类方程的非负古典解的存在性。
Some singular parabolic equations with gradient term were discussed.Under certain conditions, existence of nonnegative classical solutions for the equations was obtained by parabolic regularization method and sub -super solution method.