https://popups.uliege.be/3041-539x/index.php?id=1944 Index terms fr 0 https://popups.uliege.be/3041-539x/index.php?id=1942 We consider the role of the time delay parameter in basic models of economic growth. We study the Solow model with a time lag. We also consider the dynamical optimization in the Solow model. We demonstrate that, both for Solow's model and Cass' model with a delay, there appear cyclic fluctuations whose parameters we have calculated. These fluctuations have a consbant period and appear through the mechanism of the single Hopf bifurcation. Wed, 17 Jul 2024 15:11:54 +0200 Wed, 17 Jul 2024 15:12:01 +0200 https://popups.uliege.be/3041-539x/index.php?id=1942