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arXiv 1909.05705math.APmath.FA
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半线性wave equations的正则广义解

Regular generalized solutions to semilinear wave equations

Hideo Deguchi, Michael Oberguggenberger

摘要:

本文证明了空间维数为1,2,3的具有小非线性项的半线性波动方程的广义解的存在唯一性结果。它是广义函数的Colombeau代数的集合。证明了对于一个任意增长和符号的非线性项,只要乘以一个小参数,半线性波动方程的初值问题在有界型广义函数的Colombeau代数中有唯一解.证明依赖于一个不动点定理的超度量拓扑上的代数。在经典条件下,结果表明,所考虑的半线性波动方程的整体经典解的迅速消失的错误。

英文摘要:

The paper is devoted to proving an existence and uniqueness result for generalized solutions to semilinear wave equations with a small nonlinearity in space dimensions 1, 2, 3. The setting is the one of Colombeau algebras of generalized functions. It is shown that for a nonlinearity of arbitrary growth and sign, but multiplied with a small parameter, the initial value problem for the semilinear wave equation has a unique solution in the Colombeau algebra of generalized functions of bounded type. The proof relies on a fixed point theorem in the ultra-metric topology on the algebras involved. In classical terms, the result says that the semilinear wave equations under consideration have global classical solutions up to a rapidly vanishing error.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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