2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/157897Fundamental solution of Fokker - Planck equation is built by means of the Fourier transform method. The result is checked by direct calculation. Changes: missed factor in (29), (30), corrected (31), (35), removed former (36), added explanation on prolonged operators (45), (46), (47).8 pages, PDFExactly Solvable and Integrable SystemsChaotic Dynamicstext