RMIN matrix function
RMIN(A) Returns a column vector with the same number of rows as the argument. Each row of the result contains the minimum value of the corresponding row of A.
Matrix Algebra Useful for Statistics
Shayle R. Searle, Andre I. Khuri
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This book addresses matrix algebra that is useful in the statistical analysis of data as well as within statistics as a whole. The material is presented in an explanatory style rather than a formal theorem-proof format and is self-contained.