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Periodic boundary value problems for first-order integro-differential equations of mixed type |
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| Authors: | Zhang Fubao Associate Professor |
| Institution: | (1) Department of Mathematics, Xuzhou Normal University, 221009 Xuzhou, P R China |
| Abstract: | The existence of at least one solution and the existence of extreme solutions of periodic boundary value problems for first_order integro_differential equations of mixed type are studied,in the presence of generalized upper and lower solutions. The discussion is based on new comparison theorems and coincidence degree and monotone iterative methods. |
| Keywords: | generalized upper and lower solutions coincidence degree monotone iteration integro_differential equation of mixed typeanti GCRV and anti STIV activity in various cultured fish cells Inhibition of viral replication in cells was dependent |
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