Note on some consequences of a problem by Dellac
Abstract By using a solvability method for differential equations, we present an elegant and straightforward/direct proof of the following slight generalization of a classical result: Let ω>0 $\omega >0$ and f be a two times continuously-differentiable function on the closed non-degenerated in...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2019-07-01
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| Series: | Advances in Difference Equations |
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| Online Access: | http://link.springer.com/article/10.1186/s13662-019-2237-7 |