In particular, there is not a satisfied result when the equation is strongly degenerate.
特别是对于强退化抛物方程，至今还没有令人满意的结果。
2
We gave a new equation of state density by the generalized uncertainty relation, studied black hole entropy on degenerate background of sphere symmetry.
采用由广义不确定关系得到的新的态密度方程，研究了球对称退化背景下黑洞的熵。
3
This paper deals with the periodic optimal control governed by a degenerate nonlinear diffusion equation.