Sonnenschein–Mantel–Debreu theorem
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![PDF] The Sonnenschein-Mantel-Debreu Results after Thirty Years ...](/imgres?imgurl=https://d3i71xaburhd42.cloudfront.net/203ee701ee9833364eb551c342bb4b0a120f937e/10-Figure1-1.png&imgrefurl=https://www.semanticscholar.org/paper/The-Sonnenschein-Mantel-Debreu-Results-after-Thirty-Rizvi/203ee701ee9833364eb551c342bb4b0a120f937e&h=608&w=658&tbnid=TMUwzqg8XM6J-M&q=Sonnenschein%E2%80%93Mantel%E2%80%93Debreu+theorem&tbnh=128&tbnw=138&usg=AI4_-kRifLr0iU4DIeXMeb_hIvMnrs2nBw&vet=1&docid=PkfqpLhbrv7DRM&sa=X&ved=2ahUKEwjL-6iu3s2FAxVVm4kEHeTwDdUQ9QF6BAgAEAc)
The Sonnenschein–Mantel–Debreu theorem is an important result in general equilibrium economics, proved by Gérard Debreu, Rolf Mantel, and Hugo F. Sonnenschein in the 1970s. Wikipedia