# M. S. Balasubramani

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Articles: 1

### A new metric in the study of shift invariant subspaces of $L^2(\mathbb{R}^n)$

Methods Funct. Anal. Topology 18 (2012), no. 3, 214-219

A new metric on the set of all shift invariant subspaces of $L^2(\mathbb{R}^n)$ is defined and the properties are studied. The limit of a sequence of principal shift invariant subspaces under this metric is principal shift invariant is proved. Also, the uniform convergence of a sequence of local trace functions is characterized in terms of convergence under this new metric.