Elliptic a^{ij} D_i D_j u + b^i D_i u + cu = f with Hölder coefficients: ||u||_{C^{2,α}} ≤ C(||f||_{C^α} + ||u||_C⁰). Regularity bootstrap.
Elliptic a^{ij} D_i D_j u + b^i D_i u + cu = f with Hölder coefficients: ||u||_{C^{2,α}} ≤ C(||f||_{C^α} + ||u||_C⁰). Regularity bootstrap.