CRUC 发表于 2025-3-25 05:39:52

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JOG 发表于 2025-3-25 07:31:34

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Blood-Clot 发表于 2025-3-25 11:44:30

https://doi.org/10.1007/BFb0089970Partielle Differentialgleichung; convergence; differential equation; differential operator; hamiltonian

哪有黄油 发表于 2025-3-25 15:57:43

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浪荡子 发表于 2025-3-25 21:01:01

The Autonomous Interest of Society, which are saddle points and the sides of which are separatrices connecting these saddle points. They are structurally unstable, and in this paper we will study the change in the phase portrait due to arbitrary small changes in the right hand sides of these systems. In particular, attention will be

AER 发表于 2025-3-26 03:32:44

Terence S. Barker (Senior Research Officer)riate Poisson-equation. Such a system can be studied by associating it with dynamical systems in a finite-dimensional phase-space. The finite-dimensional problems are treated in the frame-work of KAM-theory by Birkhoff normalization and averaging techniques. This leads to a classification of possibl

gerontocracy 发表于 2025-3-26 05:22:17

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Constitution 发表于 2025-3-26 09:11:07

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补助 发表于 2025-3-26 13:12:13

Modification of Rheological Polymer Behaviour by Ultra-Sound ApplicationIn this paper we present the modifications in rheological properties of some polymers by ultra-sound application.

cravat 发表于 2025-3-26 20:43:50

The Serialisation of Books: Macmillan’s English Men of Letters Series and the New BiographyThis is a chapter about the effect of a specific production format — a uniform series — on a genre such as biography, on the author function, and on the biographical subject. It is comparative, and the study is enhanced because the authors in question and their texts are interactive, with publisher, authors, and texts reflexive.
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查看完整版本: Titlebook: Geometrical Approaches to Differential Equations; Proceedings of the F Rodolfo Martini Conference proceedings 1980 Springer-Verlag Berlin H