离开可分裂
发表于 2025-3-28 15:52:43
The Cauchy problem (constant coefficients)To solve the Cauchy problem for a differential operator .(.) with data on a plane <.>= 0, where 0 ≠ . ∈R., means, roughly speaking, to find a solution . of the equation.where . is given, so that for another given function ϕ..
interrogate
发表于 2025-3-28 21:01:57
Differential equations which have no solutionsIn Chapter III we proved that a differential equation with constant coefficients can be solved for an arbitrary right-hand side ., at least in relatively compact open subsets of the open set where . is defined. It was discovered rather recently by H. . that the situation is completely different when the coefficients are variable.
Filibuster
发表于 2025-3-29 01:24:43
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捐助
发表于 2025-3-29 05:14:47
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cinder
发表于 2025-3-29 10:10:18
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认识
发表于 2025-3-29 13:46:24
Grundlehren der mathematischen Wissenschaftenhttp://image.papertrans.cn/l/image/586373.jpg
Facilities
发表于 2025-3-29 19:38:33
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Congeal
发表于 2025-3-29 21:34:00
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–DOX
发表于 2025-3-30 00:04:10
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