| Title: | On Existence and Asymptotic Properties of Kneser Solutions to Singular Second Order ODE. (English) | 
| Author: | Vampolová, Jana | 
| Language: | English | 
| Journal: | Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica | 
| ISSN: | 0231-9721 | 
| Volume: | 52 | 
| Issue: | 1 | 
| Year: | 2013 | 
| Pages: | 135-152 | 
| Summary lang: | English | 
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| Category: | math | 
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| Summary: | We investigate an asymptotic behaviour of damped non-oscillatory solutions of the initial value problem with a time singularity $\left( p(t)u^{\prime }(t) \right)^{\prime } + p(t)f ( u(t) )=0$, $u(0)=u_0$, $u^{\prime }(0)=0$ on the unbounded domain $[0,\infty )$. Function $f$ is locally Lipschitz continuous on $\mathbb {R}$ and has at least three zeros $L_0 <0$, $0$ and $L>0$. The initial value $u_0\in (L_0, L)\setminus \lbrace  0\rbrace $. Function $p$ is continuous on $[0,\infty ),$ has a positive continuous derivative on $(0,\infty )$ and $p(0)=0$. Asymptotic formulas for damped non-oscillatory solutions and their first derivatives are derived under some additional assumptions. Further, we provide conditions for functions $p$ and $f$, which guarantee the existence of Kneser solutions. (English) | 
| Keyword: | singular ordinary differential equation of the second order | 
| Keyword: | time singularities | 
| Keyword: | unbounded domain | 
| Keyword: | asymptotic properties | 
| Keyword: | Kneser solutions | 
| Keyword: | damped solutions | 
| Keyword: | non-oscillatory solutions | 
| MSC: | 34A12 | 
| MSC: | 34D05 | 
| idZBL: | Zbl 06285760 | 
| idMR: | MR3202755 | 
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| Date available: | 2013-08-02T08:05:21Z | 
| Last updated: | 2014-07-30 | 
| Stable URL: | http://hdl.handle.net/10338.dmlcz/143397 | 
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