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Local behavior and global existence of positive solutions of auλ⩽−Δu⩽uλ

✍ Scribed by Steven D. Taliaferro


Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
102 KB
Volume
19
Category
Article
ISSN
0294-1449

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✦ Synopsis


We study the behavior near the origin of C 2 positive solutions u(x) of

in a punctured neighborhood of the origin in R n (n > 2) where the constants λ and a satisfy n n-2 < λ < n+2 n-2 and 0 < a < 1. We also study the existence of C 2 positive solutions of ( * ) in R n . In both cases we show that changing a from one value in the open interval (0, 1) to another value in (0, 1) can have a dramatic effect.  2002 Éditions scientifiques et médicales Elsevier SAS RÉSUMÉ. -On étudie le comportement prés de l' origine des solutions positives de classe C 2 u(x) de

dans un voisinage épointé de l' origine dans R n (n > 2) où les constantes λ et a satisfont n n-2 < λ < n+2 n-2 et 0 < a < 1. On étudie aussi l' existence de solutions positives de classe C 2 de ( * ) dans R n . Dans les deux cas nous montrons que changer la valeur de a dans l'intervalle ouvert (0, 1) peut avoir un effet dramatique.


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Existence of multiple positive solutions
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