Existence of positive solutions for singular initial and boundary value problems via the classical upper and lower solution approach
β Scribed by R.P. Agarwal; Donal O'Regan; V. Lakshmikantham; S. Leela
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- English
- Weight
- 87 KB
- Volume
- 50
- Category
- Article
- ISSN
- 0362-546X
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π SIMILAR VOLUMES
This paper presents two sufficmnt condIUons whmh guarantee the existence and umqueness of a positive solution for a class of singular boundary value problems
An upper and lower solution theory is presented for singular initial value problems. Our non-linear term may be singular in both the independent and dependent variable. Existence will be established using Schauder's "xed point theorem and the Arzela}Ascoli theorem.
## Abstract We obtain via Schauder's fixed point theorem new results for singular secondβorder boundary value problems where our nonβlinear term __f__(__t__,__y__,__z__) is allowed to change sign. In particular, our problem may be singular at __y__=0, __t__=0 and/or __t__=1. Copyright Β© 2002 John W