A note on upper and lower solutions for
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Ravi P. Agarwal; Donal O'Regan
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Article
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2000
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John Wiley and Sons
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English
โ 87 KB
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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.