Abstract
We consider an optimal growth (multi-sector) model with nonconvex technology. Using the Clarke results on generalized gradients, we prove that the value function has left and right derivatives with respect to the initial capital stock, without requiring supermodularity assumptions.
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Askri, K., Le Van, C. Differentiability of the Value Function of Nonclassical Optimal Growth Models. Journal of Optimization Theory and Applications 97, 591–604 (1998). https://doi.org/10.1023/A:1022690009338
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DOI: https://doi.org/10.1023/A:1022690009338