TY - JOUR AU - Adiguzelov, E. AU - Avci, H. AU - Gul, E. PY - 2017/04/24 Y2 - 2024/03/29 TI - An asymptotic formula for the number of eigenvalues of a differential operator JF - Proyecciones (Antofagasta, On line) JA - Proyecciones (Antofagasta, On line) VL - 20 IS - 1 SE - DO - 10.4067/S0716-09172001000100005 UR - https://www.revistaproyecciones.cl/index.php/proyecciones/article/view/1515 SP - 65-82 AB - In this work, it is proved that the spectrum of an differential operator with unbounded operator coefficients in elliptic type with partial derivatives is pure discrete and an asymptotic formula is found for the number of eigenvalues of this operator. ER -