مشخصات پژوهش

عنوان	SUBGROUPS OF FINITE INDEX IN AN ADDITIVE GROUP OF A RING
نوع پژوهش	مقاله چاپ شده
کلیدواژه‌ها	Subgroup, additive group, ring, finite index
چکیده	If K is an infinite field and G ⊆ K is a subgroup of finite index in an additive group, then K∗ = G∗G∗−1 where G∗ denotes the set of all invertible elements in G and G∗−1 denotes all inverses of elements of G∗. Similar results hold for various fields, division rings and rings.
پژوهشگران	سید محمد حسن هاشمی (نفر دوم)، دوستعلی مژده (نفر اول)