“Corrigendum [On β-Open Sets and Ideals in Topological Spaces, European Journal of Pure and Applied Mathematics, Vol. 12, No. 3, 2019, 893-905]”. European Journal of Pure and Applied Mathematics, vol. 12, no. 4, Oct. 2019, pp. 1661-, https://doi.org/10.29020/nybg.ejpam.v12i4.3551.