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- W4320178432 abstract "In this paper, we introduce the dual index and dual core generalized inverse (DCGI). By applying rank equation, generalized inverse and matrix decomposition, we give several characterizations of the dual index when it is equal to one. And we get that if DCGI exists, then it is unique. We derive a compact formula for DCGI and a series of equivalent characterizations of the existence of the inverse. It is worth nothing that the dual index of $hat{M}$ is equal to one if and only if its DCGI exists. When the dual index of $hat{M}$ is equal to one, we study dual Moore-Penrose generalized inverse (DMPGI) and dual group generalized inverse (DGGI), and consider the relationships among DCGI, DMPGI, DGGI, Moore-Penrose dual generalized inverse (MPDGI) and other dual generalized inverses. In addition, we consider symmetric dual matrix and its dual generalized inverses. At last, two examples are given to illustrate the application of DCGI in linear dual equations." @default.
- W4320178432 created "2023-02-13" @default.
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- W4320178432 date "2022-06-11" @default.
- W4320178432 modified "2023-09-23" @default.
- W4320178432 title "The Dual Index and Dual Core Generalized Inverse" @default.
- W4320178432 doi "https://doi.org/10.48550/arxiv.2206.05482" @default.
- W4320178432 hasPublicationYear "2022" @default.
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