2 citations · 5 across the 7 of their papers we have counts for
7 papers
Hartman-Stampacchia theorem, Gale-Nikaido-Debreu lemma, and Brouwer and Kakutani fixed-point theorems
Pascal Gourdel, Cuong Le Van, Ngoc-Sang Pham +1
This paper uses the Hartman-Stampacchia theorems as the primary tool to prove the Gale-Nikaid{ô}-Debreu lemmas. It also establishes a cycle of equivalences among the Hartman-Stampa…
A note on first-order and transversality conditions in infinite-horizon continuous-time optimal control models
Stefano Bosi, David Desmarchelier, Ngoc-Sang Pham
We provide simple and easily verifiable necessary and sufficient conditions for infinite-horizon continuous-time optimal control problems. Under standard concavity and integrabilit…
Wariness and Poverty Traps
Hai Ha Pham, Ngoc-Sang Pham
We investigate the effects of wariness (defined as individuals' concern for their minimum utility over time) on poverty traps and equilibrium multiplicity in an overlapping generat…
Comment on 'Asset Bubbles and Overlapping Generations'
Ngoc-Sang Pham, Alexis Akira Toda
Tirole (1985) studied an overlapping generations model with capital accumulation and showed that the emergence of asset bubbles solves the capital over-accumulation problem. His Pr…
Global Characterization of Equilibria in Tirole's (1985) Model with a Dividend-Paying Asset
Ngoc-Sang Pham, Alexis Akira Toda
We revisit Tirole's classic paper "Asset Bubbles and Overlapping Generations" (1985, Econometrica) in the case of a dividend-paying asset. Recently, Pham and Toda (2026) constructe…
(Non-Monotonic) Effects of Productivity and Credit Constraints on Equilibrium Aggregate Production in General Equilibrium Models with Heterogeneous Producers
Ngoc-Sang Pham
We show that, in a market economy, the aggregate production level depends not only on the aggregate variables but also on the distribution of individual characteristics (e.g., prod…
The relationship between general equilibrium models with infinite-lived agents and overlapping generations models, and some applications
Ngoc-Sang Pham
We prove that a two-cycle equilibrium in a general equilibrium model with infinitely-lived agents (GEILA) constitutes an equilibrium in an overlapping generations (OLG) model. Conv…