It is proved that neither G9(Q) nor G11(Q) is a subgroup of K2(Q)which confirms two special cases of a conjecture proposed by Browkin, J. (LectureNotes in Math., 966, Springer-Verlag, New York, Heidelberg, Berlin, 198...It is proved that neither G9(Q) nor G11(Q) is a subgroup of K2(Q)which confirms two special cases of a conjecture proposed by Browkin, J. (LectureNotes in Math., 966, Springer-Verlag, New York, Heidelberg, Berlin, 1982, 1-6).展开更多
Let S be a formal matrix ring, T the subring consisting of all diagonal elements, I the set consisting of all off-diagonal elements. Then I is a split radical ideal under certain conditions. In this paper, we show tha...Let S be a formal matrix ring, T the subring consisting of all diagonal elements, I the set consisting of all off-diagonal elements. Then I is a split radical ideal under certain conditions. In this paper, we show that K2（S）≈ K2（T） G K2（S, I）, and a presentation of K2（S, I） is given.展开更多
文摘It is proved that neither G9(Q) nor G11(Q) is a subgroup of K2(Q)which confirms two special cases of a conjecture proposed by Browkin, J. (LectureNotes in Math., 966, Springer-Verlag, New York, Heidelberg, Berlin, 1982, 1-6).
基金Supported by Natural Science Foundation of Anhui Department of Education (Grant No. KJ2008B240)supported by Natural Science Foundation of China (Grant No. 61170172)
文摘Let S be a formal matrix ring, T the subring consisting of all diagonal elements, I the set consisting of all off-diagonal elements. Then I is a split radical ideal under certain conditions. In this paper, we show that K2（S）≈ K2（T） G K2（S, I）, and a presentation of K2（S, I） is given.
