中古
发表于 2025-3-25 06:22:19
Eduardo Casas,Fredi Tröltzsch,Andreas Ungerung des britischen Post- und Fernmeldewesens von einer staatlichen PTT mit Post- und Fernmeldediensten zu einem öffentlichen Unternehmen “Post Office”, das das Land mit Post- und Postbankdiensten versorgt, und einem privaten, staatlich regulierten Unternehmen “British Telecom” in zwei Studien differ
纠缠
发表于 2025-3-25 10:35:27
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Compatriot
发表于 2025-3-25 13:33:56
Exponential Bases in Sobolev Spaces in Control and Observation Problems,g appropriately defined Sobolev spaces. This makes it possible to choose ‘natural’ pairs of spaces: the state space / observability space and the control space / state space, depending on whether an observation or a control problem is studied, respectively, so that the observation and control operators are isomorphisms.
陈腐的人
发表于 2025-3-25 18:17:34
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旧病复发
发表于 2025-3-25 21:04:59
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spondylosis
发表于 2025-3-26 00:34:22
On the Approximate Controllability for some Explosive Parabolic Problems,a given time . and which is, at time ., as close as we wish from a given state? Some general results along these lines are presented here for semilinear second order parabolic equations as well as for a non local nonlinear problem. We also give some results proving that “the more the system will blow up” the “cheaper” it will be the control.
POWER
发表于 2025-3-26 07:55:29
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agenda
发表于 2025-3-26 12:21:59
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休息
发表于 2025-3-26 13:15:15
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Pandemic
发表于 2025-3-26 17:03:35
,Intrinsic , (2, 1) Thin Shell Model and Naghdi’s Models without A Priori Assumption on the Stress Tth Lips-chitzian boundary in a .. submanifold of ... We further obtain Naghdi’s thin shell models by elimination of variables in the .(2, 1) model without using the a priori assumption σ. = 0 on the stress tensor σ.