Form of excess demand correspondence

2018-10-20 19:56:09

Consider a pure exchange economy with L goods and I consumers. Suppose the utility function is quasiconcave rather than strictly concave, and therefore, the solution to the consumer's utility maximisation problem is not necessarily unique. Consequently, the Marshallian demand function becomes a Marshallian demand correspondence, and same with the excess demand function. But I'm having a hard time visualising the form of these correspondences. Could someone help with this?