TY  - JOUR 
AU  - Albouy, Alain
AU  - Ureña Alcázar, Antonio Jesús
PY  - 2022
UR  - https://hdl.handle.net/10481/77053
AB  - 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...
LA  - eng
PB  - World Scientific
KW  - Antimaximum principle
KW  - Forced linear oscillator
KW  - Positive solutions
KW  - Separation of convex sets
TI  - An antimaximum principle for periodic solutions of a forced oscillator
ER  -