起来了
发表于 2025-3-28 17:25:06
Heiko Griepenkerltic diffusion of impulsive systems will be presented. A frame work for periodic flows in switching systems will be presented. The periodic flows and stability for linear switching systems will be discussed. This framework can be applied to nonlinear switching systems. The further results on stabilit
Arb853
发表于 2025-3-28 19:22:14
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不能约
发表于 2025-3-29 00:53:04
Ulrich Pühselargest ideal, all of whose elements are regular elements of the ring. In all these studies it was clear that regularity was intimately related to direct sum decompositions. Ware and Zelmanowitz (, ) de?ned regularity in modules and studied the structure of regular modules. Nicholson ()
做方舟
发表于 2025-3-29 04:08:40
Hans-Christian Riekhofnce proof given by H.W. Alt for this case is outlined. The main difficulty to be overcome is that one can no longer preassign the topological type of the parameter domain on which the desired minimizer will be defined. Finally the regularity of the movable part . of the boundary of the area-minimizi
有花
发表于 2025-3-29 07:59:20
Magnus Graf Lambsdorff,Jürgen Tanneberger isoperimetric inequalities, leading to the discussion of obstacle problems and of Plateau´s problem for H-surfaces in a Riemannian manifold.A natural generalization of the isoperimetric problem is the so-called thread problem, dealing with minimal surfaces whose boundary consists of a fixed arc of
维持
发表于 2025-3-29 13:15:39
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持续
发表于 2025-3-29 17:15:30
his equation depend on 3N variables, three spatial dimensions for each electron. Approxim- ing the solutions is thus inordinately challenging, and it is conventionally believed that a reduction to simpli ed models, such as those of the Hartree-Fock method or density functional theory, is the only te
按等级
发表于 2025-3-29 21:11:21
el as well as to physicists and theoretical chemists with a The electronic Schrodi ¨ nger equation describes the motion of N electrons under Coulomb interaction forces in a eld of clamped nuclei. Solutions of this equation depend on 3N variables, three spatial dimensions for each electron. Approxim-
Analogy
发表于 2025-3-30 00:22:26
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削减
发表于 2025-3-30 08:07:15
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