Hartman-Stampacchia theorem, Gale-Nikaido-Debreu lemma, and Brouwer and Kakutani fixed-point theorems
Pascal Gourdel (),
Cuong Le Van (),
Ngoc-Sang Pham and
Cuong Tran Viet ()
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Pascal Gourdel: PSE - Paris School of Economics - UP1 - Université Paris 1 Panthéon-Sorbonne - ENS-PSL - École normale supérieure - Paris - PSL - Université Paris Sciences et Lettres - EHESS - École des hautes études en sciences sociales - ENPC - École nationale des ponts et chaussées - CNRS - Centre National de la Recherche Scientifique - INRAE - Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement, CES - Centre d'économie de la Sorbonne - UP1 - Université Paris 1 Panthéon-Sorbonne - CNRS - Centre National de la Recherche Scientifique
Cuong Le Van: IPAG Business School, CNRS - Centre National de la Recherche Scientifique, PSE - Paris School of Economics - UP1 - Université Paris 1 Panthéon-Sorbonne - ENS-PSL - École normale supérieure - Paris - PSL - Université Paris Sciences et Lettres - EHESS - École des hautes études en sciences sociales - ENPC - École nationale des ponts et chaussées - CNRS - Centre National de la Recherche Scientifique - INRAE - Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement, CES - Centre d'économie de la Sorbonne - UP1 - Université Paris 1 Panthéon-Sorbonne - CNRS - Centre National de la Recherche Scientifique
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Abstract:
This paper uses the Hartman-Stampacchia theorem and its generalized version as the primary tools to prove the Gale-Nikaid\^o-Debreu lemmas. It also establishes a mutual equivalence among the Hartman-Stampacchia theorem, the Gale-Nikaid\^o-Debreu lemmas, and the Kakutani and Brouwer fixed-point theorems.
Keywords: Hartman-Stampacchia theorem; Gale-Nikaido-Debreu lemma; Brouwer fixed point theorem; Kakutani fixed point theorem; General equilibrimum; Variational inequalities (search for similar items in EconPapers)
Date: 2025-03-08
Note: View the original document on HAL open archive server: https://hal.science/hal-04008394v2
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Related works:
Working Paper: Hartman-Stampacchia theorem, Gale-Nikaido-Debreu lemma, and Brouwer and Kakutani fixed-point theorems (2025) 
Working Paper: Hartman-Stampacchia theorem, Gale-Nikaido-Debreu lemma, and Brouwer and Kakutani fixed-point theorems (2023) 
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Persistent link: https://EconPapers.repec.org/RePEc:hal:cesptp:hal-04008394
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