hardheaded
发表于 2025-3-23 10:42:33
Gareth Wynn-Williamstum (.., ..). However, this datum is obtained by an experimental procedure and is therefore affected by an error. If a “small” difference in the initial data leads to a new solution that is “close” to the previous one, .(., .., ..) is said to be stable in the sense of Liapunov (see, e.g., , ,
愚笨
发表于 2025-3-23 14:21:04
Gareth Wynn-Williams presented in this chapter, which is called Poincaré’s method, follows a completely different logic (see, e.g., , , ). In fact, the power series method supplies a polynomial of a fixed degree ., which represents an approximate solution of (1.3) .... A better approximation is obtained by in
CYT
发表于 2025-3-23 19:29:45
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Original
发表于 2025-3-23 22:45:26
Gareth Wynn-Williamstific disciplines and a resurgence of interest in the modern as well as the classical techniques of applied mathematics. This renewal of interest, both in re search and teaching, has led to the establishment of the series Texts in Applied Mathematics (TAM). The development of new courses is a natur
cuticle
发表于 2025-3-24 02:30:44
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Indigence
发表于 2025-3-24 10:28:48
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CRASS
发表于 2025-3-24 14:04:09
Book 2016urvey the sky in a way that was not possible before. It is these surveys of discovery that are the subject of this book..In the first few chapters the author discusses what astronomers learned from visible-light surveys, first with the naked eye, then using telescopes in the seventeenth century, an
假装是你
发表于 2025-3-24 18:32:38
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惰性气体
发表于 2025-3-24 19:56:05
The Photography Era,Henry Fox Talbot in England found ways to indefinitely preserve an image on either glass or paper. Early emulsions required very long exposures, but by 1850 the daguerrotype process had been sufficiently improved for an image of the star Vega to be obtained using the 15-inch refractor at Harvard Col
咆哮
发表于 2025-3-25 01:30:33
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