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searching for Idempotent matrix 2 found (16 total)

Instrumental variables estimation (6,032 words) [view diff] exact match in snippet view article find links to article

{X}}=P_{Z}X} and noting that P Z {\displaystyle P_{Z}} is a symmetric and idempotent matrix, so that P Z T P Z = P Z P Z = P Z {\displaystyle P_{Z}^{\mathrm {T}

Determination of equilibrium constants (7,186 words) [view diff] exact match in snippet view article find links to article

}T\right)^{-1}J^{\mathrm {T} }y^{\mathrm {obs} }} } The symmetric, idempotent matrix J(JTT)−1J is known in the statistics literature as the hat matrix