TY - Jour Au - Fragnelli，Genni Py - 2003Da - 1900/01/01 TI - Semigroups求解PDES的光谱映射定理与非学员过去SP - 405758 VL - 2003 AB - SN - 1085-3375 UR - HTTPS：//Doi.org/10.1155/S1085337503306335 Do - 10.1155 / S1085335 JF - 抽象和应用分析PB - Hindwi Publishing Corporation KW - ER -