Andrés CarvajalÁlvaro Riascos2026-03-222026-03-22200810.2202/1935-1704.1420https://doi.org/10.2202/1935-1704.1420https://andeanlibrary.org/handle/123456789/50710Citaciones: 5We show that, even under incomplete markets, the equilibrium manifold identifies individual demands everywhere in their domains. Under partial observation of the manifold, we determine maximal subsets of the domains on which identification holds. For this, we assume conditions of smoothness, interiority and regularity. It is crucial that there be date-zero consumption. As a by-product, we develop a duality theory under incomplete markets.enSmoothnessIdentification (biology)Duality (order theory)Incomplete marketsConsumption (sociology)Manifold (fluid mechanics)Product (mathematics)Mathematical economicsZero (linguistics)Economicsarticle