Journal of Classical Analysis · Volume 6, Issue 1 Order ideal limit points and a generalized Bolzano-theorem 06-02 Pages 29-37 DOI 10.7153/jca-06-02 Downloads Short PDF Full PDF PNG Authors Bablu Biswas D. K. Ganguly Keywords additive system order convergence natural density ideal I-convergence OI-convergence Subject classes 40A05 46B42