منابع مشابه
Smooth Localized Parametric Resonance for Wave Equations
This example is studied using Floquet theory. A classic example is k(t) = 1 + ε cosωt, where one finds regions of instability in the ε, ω plane for which there are solutions which grow exponentially in time. The instability regions are open and with closures touching ε = 0 at critical frequencies (see [A], [MW]). For any t, the constant coefficient problems with k frozen at k(t) is conservative...
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is the natural combination of these equations, describing the free motion of an ndimensional surface in a non-Euclidean space; for instance, the motion of a string that is constrained to lie on a sphere would be given (at least to first approximation) as a wave map. As such, wave maps are one of the fundamental equations used to describe geometric motion, although they are not as well understoo...
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ژورنال
عنوان ژورنال: Funkcialaj Ekvacioj
سال: 2014
ISSN: 0532-8721
DOI: 10.1619/fesi.57.351