Disclaimer: I post these notes primarily so I can access them from anywhere I happen to be. I do not mind if other people use the notes as a source but of course it must be done at your own risk. Economics can be both mathematically intensive and fairly subjective so it's always good to have as many perspectives as possible. To that end, I would appreciate an e-mail if you find errors, technical or conceptual, or you have comments on my interpretation.

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