Hahn, Siegried Über Näherungslösungen von nichtlinearen Operatorengleichungen in topologischen Vektorräumen. (German) Zbl 0286.47038 Wiss. Z. techn. Univ. Dresden 22, 489-493 (1973). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page MSC: 47J05 Equations involving nonlinear operators (general) 55M25 Degree, winding number 65N30 Finite element, Rayleigh-Ritz and Galerkin methods for boundary value problems involving PDEs × Cite Format Result Cite Review PDF