Some Remarks on One-Sided Inverses

Some Remarks on One-Sided Inverses
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DOI:
10.1007/978-1-4612-3694-8_6
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发表时间:
1950-03
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通讯作者:
N. Jacobson
N. Jacobson
中科院分区:
其他
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作者:
N. Jacobson

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取一个单位为1的任意环,假设它包含一对元素,使得我们引入元素fori, j= 1,2,3,…,其中可以理解为u0= l =v0。可以直接证明这样的定义满足矩阵单位的乘法表:特别是元素= 8个正交幂等元素。Noeij = 0。因为(3)其中一个的消失意味着所有的消失;特别地,它暗示与(1)相反。
Letbe an arbitrary ring with an identity 1, and suppose thatcontains a pair of elementsu, vsuch thatWe introduce the elementsfori, j= 1, 2, 3, …, where it is understood thatu0= l =v0. It can be verified directly that theeijthus defined satisfy the multiplication table for matrix units:In particular the elementsei=eijare orthogonal idempotent elements. Noeij=0. For by (3) the vanishing of one of theeijimplies the vanishing of all; in particular, it implies thatcontrary to (1).