@misc{10481/77053,
year = {2022},
month = {1},
url = {https://hdl.handle.net/10481/77053},
abstract = {Consider the equation of the linear oscillator u '' + u = h(theta), where the forcing term h : R -> R is 2 pi-periodic and positive. We show that the existence of a periodic solution implies the existence of a positive solution. To this aim we establish connections between this problem and some separation questions of convex analysis.},
organization = {Paris Observatory grant},
publisher = {World Scientific},
keywords = {Antimaximum principle},
keywords = {Forced linear oscillator},
keywords = {Positive solutions},
keywords = {Separation of convex sets},
title = {An antimaximum principle for periodic solutions of a forced oscillator},
author = {Albouy, Alain and Ureña Alcázar, Antonio Jesús},
}