arthroscopy
发表于 2025-3-25 03:20:55
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烧瓶
发表于 2025-3-25 11:08:36
The Theory of PotentialThe Newtonian potential, or the potential of volume, associated to the Laplace equation . is, by definition, the following improper integral: .where ., and . is the area of the unit sphere from the .-dimensional space ..
Parabola
发表于 2025-3-25 14:38:50
Boundary Value Problems for Elliptic OperatorsConsider the bounded domain . with boundary . and the linear operator of second order
啪心儿跳动
发表于 2025-3-25 16:09:07
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aristocracy
发表于 2025-3-25 22:28:55
Parabolic EquationsThe prototype of a parabolic equation is given by the equation of propagation of heat in a body. Let . be a bounded domain from . having boundary . and .. For a constant of time ., arbitrarily fixed, consider the interval of time . given by
喃喃诉苦
发表于 2025-3-26 00:51:20
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里程碑
发表于 2025-3-26 07:20:28
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行为
发表于 2025-3-26 10:49:25
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Lipoprotein
发表于 2025-3-26 16:14:48
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扔掉掐死你
发表于 2025-3-26 19:51:31
Linear Partial Differential Equations of Second OrderLet us consider the differential operator .in which the coefficients . and . are regular functions which depend only on one variable . and which are defined on an open set . from ., where . is not necessarily bounded.