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Frequency Entrainment for Almost Periodic Evolution Equations
Proceedings of the American Mathematical Society, 1986A theorem of Massera stating that periodic solutions of equations are (under a simple hypothesis) entrained is generalized to limit periodic equations and (with a weak definition of entrainment) to almost periodic equations. An error is explained in a stronger result claimed by Cartwright.
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High-Frequency Instabilities of the Kawahara Equation: A Perturbative Approach
SIAM Journal on Applied Dynamical Systems, 2021Olga Trichtchenko +2 more
exaly
Frequency theorem and the Lur'e equation
Siberian Mathematical Journal, 1979openaire +2 more sources
Frequency-domain wave-equation traveltime inversion with a monofrequency component
Geophysics, 2021Yuzhu Liu, Jizhong Yang, Jianhua Wang
exaly
A novel frequency tracker for sinusoidal signal based on state dependent Riccati Equation filter
Measurement: Journal of the International Measurement Confederation, 2021Abdelhamid Iratni
exaly
A note on the pochhammer frequency equation
2016The Pochhammer frequency equation for both a convex and a concave cylinder is analysed in the limiting case when the propagation constant tends to zero. It is found that below a certain value of the radius the displacements involve a combination of ordinary and modified Bessel functions instead of just one type of Bessel functions. This value of the
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From the Lugiato–Lefever equation to microresonator-based soliton Kerr frequency combs
Philosophical Transactions Series A, Mathematical, Physical, and Engineering Sciences, 2018T J Kippenberg +2 more
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On the Differential Equation for the Generation of Frequency Modulation
IMA Journal of Applied Mathematics, 1970openaire +1 more source