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Results tagged with Search options user 5780

The application of mathematical methods to represent theories and analyze problems in economics.

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In physics it is useful to think of a vector as being defined by its magnitude and direction, but I think this is not the most useful intuition in Economics, rather the better intuition is as an order …
answered Jul 15 '16 by Sunhwa
2
votes
1answer
If $f:\mathbb{R}^n \to \mathbb{R} $ is twice continuously differentiable, has a non-negative gradient, and is supermodular, and $g: \mathbb{R} \to \mathbb{R}$ is twice continuously differentiable a …
asked Jun 2 '16 by Sunhwa
2
votes
1answer
A definition in my book states $ \sigma^* \in \Delta$ is a Nash equilibrium for $\Gamma$ if for all $i \in I$ and all $\mu_i \in \Delta_i, \; U_i (\sigma^*) \geq U_i(\sigma^* \backslash \mu_i)$. …
asked Jul 18 '16 by Sunhwa
2
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This question is quite broad, but I'll give 3 ideas I would have liked to do, and is of appropriate difficulty, while in undergrad. Review a seminal paper - Wikipedia has a list of important publica …
answered Oct 9 '16 by Sunhwa
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0answers
Let $K=$capital, $L=$ labour, $A=$ knowledge or effectiveness of labour. And put $\mathcal{K} = K/AL$ the capital stock per unit of effective labour. If the following is negative $$ \displaystyle \ …
asked Jan 18 '16 by Sunhwa
3
votes
1answer
If $\succsim$ is rational, then $B \mapsto C^*(B, \succsim)$ satisfies the weak axiom, and $\succsim=\succsim^*$ Previously in the same theorem actually, they proved the following: If $C$ is …
asked May 5 '16 by Sunhwa
3
votes
I'll give a try, perhaps it is just this first derivative giving you trouble: $$ \frac{d}{dt} ln \left( \frac{ \gamma_t + (n+\delta)}{sA} \right) = \frac{sA}{\gamma_t + (n+\delta)} \frac{d}{dt} \left …
answered Feb 23 '16 by Sunhwa
3
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1answer
I would like to ask what kind of math is used in Development Economics? I have one more semester in my Master of Math programme before hopefully entering a PhD in Economics and am considering speci …
asked Dec 7 '15 by Sunhwa