淡江大學機構典藏:Item 987654321/41387
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    题名: Baer semirings and Baer *-semirings of cone-preserving maps
    作者: Barker, George Phillip;Tam, Bit-Shun
    贡献者: 淡江大學數學學系
    日期: 1997-04
    上传时间: 2013-06-13 11:25:02 (UTC+8)
    出版者: Philadelphia: Elsevier Inc.
    摘要: The study of π(K), the semiring of matrices which leave invariant the proper cone K, is continued in this paper. The definitions of Baer rings and Baer ∗-rings are extended to semirings, at least in the case of π(K). Results that relate the concepts of right (left) annihilators, right (left) facial ideals, and p-exposed or o.p.-exposed faces are given. Proper cones K for which π(K) is a right (left) Baer semiring or a Baer ∗-semiring are characterized. In particular, it is shown that π(K) is a Baer ∗-semiring if and only if K is a perfect cone. The set of projections in π(K) is investigated, and its lattice structure is analyzed. The concepts of equivalence of idempotents and ∗-equivalence of projections in π(K) are introduced and examined.
    關聯: Linear Algebra and Its Applications 256, pp.165-183
    DOI: 10.1016/S0024-3795(97)81116-0
    显示于类别:[數學學系暨研究所] 期刊論文

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