嬉戏
发表于 2025-3-21 19:30:36
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Inclement
发表于 2025-3-21 20:47:39
The non-parametric problem,ying on .. Determine a function . which is continuous in and on ., which has continuous derivatives of the first and second orders inside of ., which reduces to . on ., and which satisfies inside of . the partial differential equation ., where ..
osteocytes
发表于 2025-3-22 01:53:15
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雪上轻舟飞过
发表于 2025-3-22 07:22:05
Minimal surfaces in the large,ted in the case of a general Jordan curve. At any rate, that supplementary condition has been dropped, at least for the time being, in the modern general investigations, and the existence of a solution free of singularities has been established only for certain special classes of curves.
Capitulate
发表于 2025-3-22 11:25:59
Book 1993st possible length. The problem of deter points mining and investigating a surface with given boundary and with a smallest possible area might then be considered as the most immediate two-dimensional variation problem. The classical work, concerned with the latter problem, is summed up in a beautif
CLOWN
发表于 2025-3-22 16:18:50
itspolitische Entscheidungsträger werden aufgefortert, umgeh.Rund 30 Millionen Menschen leiden in Deutschland an allergischen Erkrankungen – Tendenz steigend. Doch trotz der alarmierenden Zunahme dieser Volkskrankheit und ihrer gravierenden Auswirkungen auf die Betroffenen und unsere Volkswirtschaft
Ardent
发表于 2025-3-22 18:12:39
Introduction, smallest possible length. The problem of determining and investigating a surface with given boundary and with a smallest possible area might then be considered as the most immediate two-dimensional variation problem.
collateral
发表于 2025-3-22 21:53:17
Curves and surfaces,traight segment of length /, then the formula (1.1) reduces to . = . where .., .., .. denote the lengths of the orthogonal projections of the segment upon the axes . (the coordinate system will always be supposed to be rectangular). The formula (1.1) is equally evident geometrically if . is a polygo
商谈
发表于 2025-3-23 05:27:25
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Exposition
发表于 2025-3-23 07:08:15
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