Izhakian, Zur and Knebusch, Manfred and Rowen, Louis (2013) SUPERTROPICAL LINEAR ALGEBRA. PACIFIC JOURNAL OF MATHEMATICS, 266 (1). pp. 43-75. ISSN 0030-8730,
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The objective of this paper is to lay out the algebraic theory of supertropical vector spaces and linear algebra, utilizing the key antisymmetric relation of "ghost surpasses". Special attention is paid to the various notions of "base", which include d-base and s-base, and these are compared to other treatments in the tropical theory. Whereas the number of elements in various d-bases may differ, it is shown that when an s-base exists, it is unique up to permutation and multiplication by scalars, and can be identified with a set of "critical" elements. Then we turn to orthogonality of vectors, which leads to supertropical bilinear forms and a supertropical version of the Gram matrix, including its connection to linear dependence. We also obtain a supertropical version of a theorem of Artin, which says that if g-orthogonality is a symmetric relation, then the underlying bilinear form is (supertropically) symmetric.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | MATRIX ALGEBRA; tropical algebra; supertropical vector spaces; linear algebra; change of base semirings; linear and bilinear forms; Gram matrix |
| Subjects: | 500 Science > 510 Mathematics |
| Divisions: | Mathematics > Professoren und akademische Räte im Ruhestand > Prof. Dr. Manfred Knebusch |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 27 Mar 2020 07:39 |
| Last Modified: | 27 Mar 2020 07:39 |
| URI: | https://pred.uni-regensburg.de/id/eprint/15802 |
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