夜晚
发表于 2025-3-23 12:25:20
Around the classical string problem,ns that minimize certain weighted averages of the density. There exists a simple set of necessary conditions of these weights. In particular, it has been shown that the only weight functions f(x)than can be consistent in all cases with the existence of an extremal density which is made up of a finit
aesthetician
发表于 2025-3-23 15:00:39
A geometrical approach to the nonlinear solvable equations,led “symplectic Kahler manifolds”, is suggested. This approach is constructive, tensorial and simple in its ideas. It allows to recover the equations obtained through the socalled AKNS approach, together with some other examples. It leads to conjecture a possible “integrability condition” for infini
拒绝
发表于 2025-3-23 20:31:45
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adipose-tissue
发表于 2025-3-23 23:48:49
Quantization of completely integrable Hamiltonian systems,
Living-Will
发表于 2025-3-24 02:57:22
Reduction technique for matrix nonlinear evolution equations,
想象
发表于 2025-3-24 07:32:16
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健谈
发表于 2025-3-24 14:31:15
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肮脏
发表于 2025-3-24 17:33:02
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停止偿付
发表于 2025-3-24 20:44:33
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独轮车
发表于 2025-3-24 23:49:27
,Existence of solutions and scattering theory for the non linear schrödinger equation,