Abstract
For a function acting between Banach spaces, we recall the notions of Hadamard and w-Hadamard differentiability and their relation to the common notions of Gâteaux and Fréchet differentiability. We observe that even for a function F: H → H that is both Hadamard and w-Hadamard differentiable but not Fréchet differentiable at 0 on a real Hilbert space H, there may be bifurcation for the equation F(u) = λu at points λ which do not belong to the spectrum of F′(0). We establish some necessary conditions for λ to be a bifurcation point in such cases and we show how this result can be used in the context of partial differential equations such as
where this situation occurs.
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Evéquoz, G., Stuart, C.A. (2006). On differentiability and bifurcation. In: Kusuoka, S., Yamazaki, A. (eds) Advances in Mathematical Economics. Advances in Mathematical Economics, vol 8. Springer, Tokyo. https://doi.org/10.1007/4-431-30899-7_6
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DOI: https://doi.org/10.1007/4-431-30899-7_6
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Print ISBN: 978-4-431-30898-0
Online ISBN: 978-4-431-30899-7
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