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Elasticity of intertemporal sustitution with composite CRRA function

In the usual CRRA $\frac{c^{1-\sigma}-1}{1-\sigma}$ function we have that the intertemporal elasticity of sustitution $\partial\frac{c_{t+1}}{{c_{t}}{\partial r}}$ is $\frac{1}{\sigma}$. But how can ...
mmendina's user avatar
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Intuition for the CES consumption index in New-Keynesian DSGE models

I don’t understand, from an intuitive point of view, the CES aggregator in the context of a New Keynsian DSGE model. I understand that the consumption index Ct is the sum of all consumption goods and ...
Robert Brown's user avatar