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EXISTENCE OF PERIODIC SOLUTIONS OF A CLASS OF SECOND-ORDER NON-AUTONOMOUS SYSTEMS |
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| Authors: | Yuan Qi and Kun Liu |
| Institution: | College of Math. and Statistics, Longdong University, Gansu 745000, PR China and College of Math. and Statistics, Longdong University, Gansu 745000, PR China |
| Abstract: | In this paper, we are concerned with the existence of periodic solutions of second-order non-autonomous systems. By applying the Schauder''s fixed point theorem and Miranda''s theorem, a new existence result of periodic solutions is established. |
| Keywords: | second-order non-autonomous systems periodic solutions Schauder''s fixed point theorem Miranda''s theorem |
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