Abstract
Inclines are the additively idempotent semirings in which products are less than or equal to either factor. In this paper, some necessary and sufficient conditions for a matrix over L to be invertible are given, where L is an incline with 0 and 1. Also it is proved that L is an integral incline if and only if GL n (L) = PL n (L) for any n (n ≥ 2), in which GL n (L) is the group of all n × n invertible matrices over L and PL n (L) is the group of all n × n permutation matrices over L. These results should be regarded as the generalizations and developments of the previous results on the invertible matrices over a distributive lattice.
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Supported by National Natural Science Foundation of China (60174013), Research Foundation for Doctoral Program of Higher Education (20020027013), Science and Technology Key Project Foundation of Ministry of Education (03184) and Major State Basic Research Development Program of China (2002CB312200)
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Han, S.C., Li, H.X. Some Conditions for Matrices over an Incline To Be Invertible and General Linear Group on an Incline. Acta Math Sinica 21, 1093–1098 (2005). https://doi.org/10.1007/s10114-004-0497-x
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DOI: https://doi.org/10.1007/s10114-004-0497-x