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Associative Ordinal Functions, Well Partial Orderings and a Problem of Skolem

โœ Scribed by Diana Schmidt


Publisher
John Wiley and Sons
Year
1978
Tongue
English
Weight
395 KB
Volume
24
Category
Article
ISSN
0044-3050

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Unstable Periodic Solutions of a Parabol
โœ Colette De Coster; Pierpaolo Omari ๐Ÿ“‚ Article ๐Ÿ“… 2000 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 243 KB

We prove the solvability of the Dirichlet-periodic problem for a semilinear parabolic equation, assuming the existence of a lower solution : and an upper solution ;, which do not satisfy the ordering condition : ;. Our results yield the existence of unstable solutions, localized by means of : and ;,