Taira, Kazuaki Spectral analysis of hypoelliptic Višik-Ventcel’ boundary value problems. (English) Zbl 1437.35243 Ann. Univ. Ferrara, Sez. VII, Sci. Mat. 66, No. 1, 157-230 (2020). MSC: 35J25 35P20 47D07 35A01 35A02 × Cite Format Result Cite Review PDF Full Text: DOI
Taira, Kazuaki Spectral analysis of the hypoelliptic Robin problem. (English) Zbl 1420.35088 Ann. Univ. Ferrara, Sez. VII, Sci. Mat. 65, No. 1, 171-199 (2019). MSC: 35J25 35P20 × Cite Format Result Cite Review PDF Full Text: DOI Link