共 50 条
- [2] SPECTRUM OF A SECOND ORDER PARTIAL DIFFERENTIAL OPERATOR CANADIAN MATHEMATICAL BULLETIN, 1969, 12 (05): : 688 - &
- [3] CONTINUOUS SPECTRUM OF SECOND-ORDER DIFFERENTIAL OPERATORS DOKLADY AKADEMII NAUK SSSR, 1973, 212 (06): : 1301 - 1304
- [5] Harnack Inequality for Hypoelliptic Second Order Partial Differential Operators Potential Analysis, 2016, 45 : 545 - 555
- [6] Generalized second order partial differential operators in analysis and probability STOCHASTIC PROCESSES AND RELATED TOPICS, 1996, 10 : 49 - 59
- [7] On the Spectrum of a Class of Second Order Periodic Elliptic Differential Operators Communications in Mathematical Physics, 2002, 229 : 49 - 55
- [8] On the spectrum of second-order differential operators with complex coefficients PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 1999, 455 (1984): : 1235 - 1257
- [10] SPECTRUM OF A SECOND ORDER PARTIAL DIFFERENTIAL OPERATOR . PRELIMINARY REPORT NOTICES OF THE AMERICAN MATHEMATICAL SOCIETY, 1970, 17 (01): : 134 - &