Editing Arrow–Debreu model (section)

==== market ====

* The '''commodities''' are indexed as <math>n\in 1:N</math>. Here <math>N</math> is the number of commodities in the economy. It is a finite number.
* The '''price vector''' <math>p = (p_1, ..., p_N) \in \R_{++}^N</math> is a vector of length <math>N</math>, with each coordinate being the price of a commodity. The prices may be zero or positive.