Grisvard, P. Diagonalisation d’opérateurs non-autoadjoints et séparation des variables. (French) Zbl 0528.47029 Journ. Équ. Dériv. Partielles, Saint-Jean-De-Monts 1983, Exp. No. 17, 13 p. (1983). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 3 Documents MSC: 47D03 Groups and semigroups of linear operators 47E05 General theory of ordinary differential operators 47F05 General theory of partial differential operators 35J30 Higher-order elliptic equations Keywords:separation of variables; biharmonic equation; analytic semigroups; Carleman classes of operators; multiplicity theory × Cite Format Result Cite Review PDF Full Text: Numdam EuDML