heterodox 发表于 2025-3-26 22:23:23
Jason Mazanov,Don Byrneagnetic waves. We discuss the sources of electromagnetic waves, which are ultimately accelerating charges, presenting an expression of the electric field they generate, in an approximation valid at large distances from the source. This is a very useful expression that we shall often use in subsequenConcomitant 发表于 2025-3-27 04:02:49
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http://reply.papertrans.cn/43/4221/422007/422007_33.pngAbduct 发表于 2025-3-27 13:16:39
Unni Karin Moksnes,Geir Arild Espnesethod which provides a simple systematic way of obtaining the generating function of a class of combinatorial objects by a symbolic description of the class. Generating functions can be thought of as analytic complex functions or can be viewed simply as formal power series, by disregarding convergenAGOG 发表于 2025-3-27 14:27:41
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Arup Kumar Dhar,Gavin William Lambert,David Anthony Bartonlustrative examples and exercises.Includes supplementary matThis textbook offers a thorough, modern introduction into commutative algebra. It is intented mainly to serve as a guide for a course of one or two semesters, or for self-study. The carefully selected subject matter concentrates on the concplasma 发表于 2025-3-27 22:00:26
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