Aids209
发表于 2025-3-26 21:41:49
Gerard O’Reganiltonian system preserves volumes in phase space. Dissipative systems, by contrast, usually give rise to solution flows which contract volumes in phase space. Though this volume contraction is a local property in phase space, it produces global effects by giving rise to a bounded set in the phase sp
率直
发表于 2025-3-27 04:07:09
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抗原
发表于 2025-3-27 05:24:48
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四指套
发表于 2025-3-27 11:59:01
Gerard O’Regan. A popular version of the LDs consists in computing the arc length of trajectories over a calibrated time window. Herein we introduce and exploit an intrinsic geometrical parametrisation of LDs, free of the time variable, for 1 degree-of-freedom Hamiltonian systems. The parametrisation depends sole
浪费物质
发表于 2025-3-27 15:12:54
Gerard O’Regan to eliminate second-order derivatives in the polarization, but we keep the second-order derivatives in the electric field. This model governs a two-level laser in a ring cavity. For some class of lasers, this system of equations has two separated time scales and forms a singularly perturbed, hyperb
不能根除
发表于 2025-3-27 20:50:48
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A保存的
发表于 2025-3-28 00:38:00
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形容词词尾
发表于 2025-3-28 02:26:41
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腐烂
发表于 2025-3-28 09:05:28
Mathematics in Civilization,of high-tech computers, mobile phones, text messaging, the Internet and the World Wide Web. Software is now pervasive, and it is an integral part of automobiles, airplanes, televisions and mobile communication. The pace of change as a result of all this new technology has been extraordinary. Today,
即席演说
发表于 2025-3-28 13:42:34
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