【摘 要】
：
A class of fully nonlinear flows is considered with nonlinear Neumann type boundary condition.We can show that the convexity is preserved for solutions of t
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A class of fully nonlinear flows is considered with nonlinear Neumann type boundary condition.We can show that the convexity is preserved for solutions of the fully nonlinear parabolic equations and exhibit the long time existence and convergence of the flow.
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