arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1601.00784math.APmath.FA
收藏

超越Gevrey正则性

Beyond Gevrey regularity

Stevan Pilipović, Nenad Teofanov, Filip Tomić

摘要:

定义并研究了比Gevrey函数正则性差的光滑函数类。为此,我们引入了两个参数的依赖序列,不满足小松的条件(M. 2“,这意味着稳定性下的微分算子的空间内的超可微函数。因此,我们的类在可微算子的作用下具有特殊的行为。在更高的层次上,我们研究微局部性质,并证明了$${\rm WF}_{0,\infty}(P(D)u)\subseteq {\rm WF}_{0,\infty}(u)\subseteq {\rm WF}_{0,\infty}(P(D)u) \cup {\rm Char}(P),$$,其中$u$是施瓦茨分布,$P(D)$是一个偏微分算子与常系数和${\rm WF}_{0,\infty}$是波前集描述的新的正则性条件。在分析中,我们引入了截断函数序列的特殊容许条件,以及一种新的技术工具--枚举法。

英文摘要:

We define and study classes of smooth functions which are less regular than Gevrey functions. To that end we introduce two-parameter dependent sequences which do not satisfy Komatsu's condition (M.2)', which implies stability under differential operators within the spaces of ultradifferentiable functions. Our classes therefore have particular behavior under the action of differentiable operators. On a more advanced level, we study microlocal properties and prove that $${\rm WF}_{0,\infty}(P(D)u)\subseteq {\rm WF}_{0,\infty}(u)\subseteq {\rm WF}_{0,\infty}(P(D)u) \cup {\rm Char}(P),$$ where $u$ is a Schwartz distribution, $P(D)$ is a partial differential operator with constant coefficients and ${\rm WF}_{0,\infty}$ is the wave front set described in terms of new regularity conditions. For the analysis we introduce particular admissibility condition for sequences of cut-off functions, and a new technical tool called enumeration.

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。

↑