My understanding of linear independance is that if you have a unique solution after rref, it's linear independant. If you have multiple solutions or no solution, it's not linear ...

This is a preview. Log in through your library . Abstract Ultrahigh-dimensional variable selection plays an increasingly important role in contemporary scientific discoveries and statistical research.

Description: First-order equations, higher-order linear equations, initial and boundary value problems, power series solutions, systems of first-order equations, Laplace transforms, applications.

Journal of the Royal Statistical Society. Series B (Statistical Methodology), Vol. 79, No. 3 (JUNE 2017), pp. 677-693 (17 pages) Statistical inferences for sample correlation matrices are important in ...