珍爱 发表于 2025-3-21 16:12:52

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宫殿般 发表于 2025-3-21 20:23:52

Mother body problem, and wants to determine the source of this gravitational field located inside the earth. Clearly, the solution of this problem is not unique. For example, it has been well known since the time of Newton that a ball with constant mass density produces the same gravitational field as the same mass concentrated at the center of the ball.

BRIDE 发表于 2025-3-22 02:21:15

Textbook 2017s.. . Although the theory of differential equations on real manifolds is well known – it is described in thousands of papers and its usefulness requires no comments or explanations – to date specialists on differential equations have not focused on the complex theory of partial differential equation

interpose 发表于 2025-3-22 05:03:33

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在前面 发表于 2025-3-22 12:07:23

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rheumatism 发表于 2025-3-22 13:21:22

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medium 发表于 2025-3-22 21:06:19

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粗鄙的人 发表于 2025-3-22 23:21:14

Ramified integrals,the situation, when the integrand is a single-valued form, the integral is a ramified function as a rule. For this reason, parametric integrals in complex analysis are also called ramified integrals. The aim of this chapter is to describe this phenomenon in examples and then present the general theory of such integrals.

gregarious 发表于 2025-3-23 04:34:50

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CYN 发表于 2025-3-23 06:38:46

Leray residues,Residues of differential forms depending on several variables were first considered by Poincaré (1887). Later, such residues appeared in the works of Picard (1901), de Rham (1932—1936), and others. In this chapter we explain the theory of residues constructed by Leray (1959).
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查看完整版本: Titlebook: Introduction to Complex Theory of Differential Equations; Anton Savin,Boris Sternin Textbook 2017 Springer International Publishing AG 201