TY - JOUR ID - 2278 TI - ULTRAFILTERS ON INFINITE DISCRETE SEMIGROUPS AND MULTIPLICATIVE MEANS JO - نشریه علمی پژوهشی امیرکبیر JA - AJSR LA - fa SN - 1015-0951 AU - AKBARI TOOTKABONI, M. AU - RIAZI, A. AD - Y1 - 2005 PY - 2005 VL - 36 IS - 2 SP - 24 EP - 24 DO - N2 - UR - https://ajsr.aut.ac.ir/article_2278.html L1 - https://ajsr.aut.ac.ir/article_2278_f00f9103558a0379ca7a76add9d06b81.pdf ER -