TY - GEN AU - Boscaggin, Alberto AU - Ortega RĂ­os, Rafael AU - Zhao, Lei PY - 2019 UR - https://hdl.handle.net/10481/99365 AB - We consider a Kepler problem in dimension two or three with a time-dependent T-periodic perturbation. We prove that for any prescribed positive integer N, there exist at least N periodic solutions (with period T ) as long as the perturbation is small... LA - eng PB - American Mathematical Society KW - Levi-Civita regularization KW - Kepler problem KW - periodic perturbation TI - Periodic solutions and regularization of a Kepler problem with time-dependent perturbation DO - https://doi.org/10.1090/tran/7589 ER -