%0 Journal Article %A Vladimir A. Kyrov %T Commutative hypercomplex numbers and the geometry of two sets %J Žurnal Sibirskogo federalʹnogo universiteta. Matematika i fizika %D 2020 %P 373-382 %V 13 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/JSFU_2020_13_3_a10/ %G en %F JSFU_2020_13_3_a10