Idempotency of linear combinations of two idempotent matrices (Q1840816)
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scientific article; zbMATH DE number 1563476
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Idempotency of linear combinations of two idempotent matrices |
scientific article; zbMATH DE number 1563476 |
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Idempotency of linear combinations of two idempotent matrices (English)
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7 May 2002
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The authors give a complete solution for the problem of characterizing all situations, where a linear combination \(P=c_1P_1 +c_2P_2\) of two different idempotent matrices \(P_1\) and \(P_2\) is also an idempotent matrix. They point out a statistical interpretation of this idempotency problem.
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chi-square distribution
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idempotent matrices
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0.97655714
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0.96131074
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0.94273067
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0.93599796
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0.9359092
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0.93505645
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