The necessary and sufficient conditions of similarity of two idempotent matrices are proved, the idempotency of linear combinations of two idempotent matrices is discussed.
摘要证明数域上个同阶幂等阵相似的充要条件是它们有相同的秩;给出幂等阵的相似标准型;讨个幂等阵的线性组合仍是幂等阵的充要条件。
The necessary and sufficient conditions of similarity of two idempotent matrices are proved, the idempotency of linear combinations of two idempotent matrices is discussed.
摘要证明数域上个同阶幂等阵相似的充要条件是它们有相同的秩;给出幂等阵的相似标准型;讨个幂等阵的线性组合仍是幂等阵的充要条件。
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