Approximating semigroups by using pseudospectra
英文摘要：
We study evolution equations with non-self-adjoint generators, for example the convection-diffusion equation. Spectral expansions are not a reliable method of solving such equations, because they are so ill-conditioned. We introduce a new method using pseusospectra to produce an approximated spectral expansion, and explain its theoretical status. We also give some simple numerical examples to show that it is much better conditioned.
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。
