TY - JOUR AU - A. G. Chentsov TI - The transformation of ultrafilters and their application in constructions of attraction sets JO - Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹûternye nauki PY - 2012 SP - 85 EP - 102 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/VUU_2012_3_a8/ LA - ru ID - VUU_2012_3_a8 ER -