2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/3570Some issues of inverting asteroseismic frequency data are discussed, including the use of model calibration and linearized inversion. An illustrative inversion of artificial data for solar-type stars, using least-squares fitting of a small set of basis functions, is presented. A few details of kernel construction are also given.To appear in Proc. 1st Eddington Workshop, `Stellar Structure and Habitable Planet Finding' (ESA SP-485), eds F. Favata, I. W. Roxburgh and D. Galadi. Processed with ESASPStyleAstrophysicstext