Please use this identifier to cite or link to this item: https://hdl.handle.net/10419/59687 
Year of Publication: 
2012
Series/Report no.: 
Discussion Paper No. 1542
Publisher: 
Northwestern University, Kellogg School of Management, Center for Mathematical Studies in Economics and Management Science, Evanston, IL
Abstract: 
We prove that under standard Lipschitz and growth conditions, the value function of all optimal control problems for one-dimensional diffusions is twice differentiable, as long as the control space is compact and the volatility is uniformly bounded below, away from zero. Under similar conditions, the value function of any optimal stopping problem is differentiable.
Subjects: 
Stochastic Control
Super Contact
Smooth Pasting
Value Function
JEL: 
C61
C62
Document Type: 
Working Paper

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