论文标题
平衡存在二元性：平衡与不可分割和收入效果
The Equilibrium Existence Duality: Equilibrium with Indivisibilities & Income Effects
论文作者
论文摘要
我们表明，借助不可分割的商品，竞争平衡的存在从根本上取决于代理的替代效应，而不是其收入影响。我们的均衡存在二元性使我们能够从具有可转让效用的设置到具有收入效应的设置的竞争均衡的存在。结果是，净替代性 - - 严格的条件比总可替代性弱 - 足以足以存在竞争平衡。我们还将估值的``需求类型''分类扩展到具有收入效应的设置，并为替代效应的模式提供了必要和足够的条件，以确保竞争平衡的存在。
We show that, with indivisible goods, the existence of competitive equilibrium fundamentally depends on agents' substitution effects, not their income effects. Our Equilibrium Existence Duality allows us to transport results on the existence of competitive equilibrium from settings with transferable utility to settings with income effects. One consequence is that net substitutability---which is a strictly weaker condition than gross substitutability---is sufficient for the existence of competitive equilibrium. We also extend the ``demand types'' classification of valuations to settings with income effects and give necessary and sufficient conditions for a pattern of substitution effects to guarantee the existence of competitive equilibrium.
